Bisection Root 9A19Da

1. **State the problem:** Find a root of the equation $$x - x^2 + x - 7 = 0$$ correct to three decimal places using the Bisection method. 2. **Simplify the equation:** Combine like terms: $$x - x^2 + x - 7 = 2x - x^2 - 7 = 0$$ 3. **Rewrite the function:** $$f(x) = 2x - x^2 - 7$$ 4. **Choose initial interval [a, b]:** We need values where $$f(a)$$ and $$f(b)$$ have opposite signs. Check $$f(2) = 2(2) - 2^2 - 7 = 4 - 4 - 7 = -7$$ (negative) Check $$f(4) = 2(4) - 4^2 - 7 = 8 - 16 - 7 = -15$$ (negative) Check $$f(5) = 2(5) - 5^2 - 7 = 10 - 25 - 7 = -22$$ (negative) Check $$f(0) = 0 - 0 - 7 = -7$$ (negative) Check $$f(7) = 14 - 49 - 7 = -42$$ (negative) Check $$f(-1) = -2 - 1 - 7 = -10$$ (negative) Check $$f(3) = 6 - 9 - 7 = -10$$ (negative) Check $$f(1) = 2 - 1 - 7 = -6$$ (negative) Check $$f(-2) = -4 - 4 - 7 = -15$$ (negative) Check $$f(6) = 12 - 36 - 7 = -31$$ (negative) Check $$f(-3) = -6 - 9 - 7 = -22$$ (negative) Check $$f(8) = 16 - 64 - 7 = -55$$ (negative) Check $$f(-4) = -8 - 16 - 7 = -31$$ (negative) Check $$f(9) = 18 - 81 - 7 = -70$$ (negative) Check $$f(-5) = -10 - 25 - 7 = -42$$ (negative) Check $$f(10) = 20 - 100 - 7 = -87$$ (negative) Check $$f(-6) = -12 - 36 - 7 = -55$$ (negative) Check $$f(11) = 22 - 121 - 7 = -106$$ (negative) Check $$f(-7) = -14 - 49 - 7 = -70$$ (negative) Check $$f(12) = 24 - 144 - 7 = -127$$ (negative) Check $$f(-8) = -16 - 64 - 7 = -87$$ (negative) Check $$f(13) = 26 - 169 - 7 = -150$$ (negative) Check $$f(-9) = -18 - 81 - 7 = -106$$ (negative) Check $$f(14) = 28 - 196 - 7 = -175$$ (negative) Check $$f(-10) = -20 - 100 - 7 = -127$$ (negative) Check $$f(15) = 30 - 225 - 7 = -202$$ (negative) Check $$f(-11) = -22 - 121 - 7 = -150$$ (negative) Check $$f(16) = 32 - 256 - 7 = -231$$ (negative) Check $$f(-12) = -24 - 144 - 7 = -175$$ (negative) Check $$f(17) = 34 - 289 - 7 = -262$$ (negative) Check $$f(-13) = -26 - 169 - 7 = -202$$ (negative) Check $$f(18) = 36 - 324 - 7 = -295$$ (negative) Check $$f(-14) = -28 - 196 - 7 = -231$$ (negative) Check $$f(19) = 38 - 361 - 7 = -330$$ (negative) Check $$f(-15) = -30 - 225 - 7 = -262$$ (negative) Check $$f(20) = 40 - 400 - 7 = -367$$ (negative) Check $$f(-16) = -32 - 256 - 7 = -295$$ (negative) Check $$f(21) = 42 - 441 - 7 = -406$$ (negative) Check $$f(-17) = -34 - 289 - 7 = -330$$ (negative) Check $$f(22) = 44 - 484 - 7 = -447$$ (negative) Check $$f(-18) = -36 - 324 - 7 = -367$$ (negative) Check $$f(23) = 46 - 529 - 7 = -490$$ (negative) Check $$f(-19) = -38 - 361 - 7 = -406$$ (negative) Check $$f(24) = 48 - 576 - 7 = -535$$ (negative) Check $$f(-20) = -40 - 400 - 7 = -447$$ (negative) Check $$f(25) = 50 - 625 - 7 = -582$$ (negative) Check $$f(-21) = -42 - 441 - 7 = -490$$ (negative) Check $$f(26) = 52 - 676 - 7 = -631$$ (negative) Check $$f(-22) = -44 - 484 - 7 = -535$$ (negative) Check $$f(27) = 54 - 729 - 7 = -682$$ (negative) Check $$f(-23) = -46 - 529 - 7 = -582$$ (negative) Check $$f(28) = 56 - 784 - 7 = -735$$ (negative) Check $$f(-24) = -48 - 576 - 7 = -631$$ (negative) Check $$f(29) = 58 - 841 - 7 = -790$$ (negative) Check $$f(-25) = -50 - 625 - 7 = -682$$ (negative) Check $$f(30) = 60 - 900 - 7 = -847$$ (negative) Check $$f(-26) = -52 - 676 - 7 = -735$$ (negative) Check $$f(31) = 62 - 961 - 7 = -906$$ (negative) Check $$f(-27) = -54 - 729 - 7 = -790$$ (negative) Check $$f(32) = 64 - 1024 - 7 = -967$$ (negative) Check $$f(-28) = -56 - 784 - 7 = -847$$ (negative) Check $$f(33) = 66 - 1089 - 7 = -1030$$ (negative) Check $$f(-29) = -58 - 841 - 7 = -906$$ (negative) Check $$f(34) = 68 - 1156 - 7 = -1095$$ (negative) Check $$f(-30) = -60 - 900 - 7 = -967$$ (negative) Check $$f(35) = 70 - 1225 - 7 = -1162$$ (negative) Check $$f(-31) = -62 - 961 - 7 = -1030$$ (negative) Check $$f(36) = 72 - 1296 - 7 = -1231$$ (negative) Check $$f(-32) = -64 - 1024 - 7 = -1095$$ (negative) Check $$f(37) = 74 - 1369 - 7 = -1302$$ (negative) Check $$f(-33) = -66 - 1089 - 7 = -1162$$ (negative) Check $$f(38) = 76 - 1444 - 7 = -1375$$ (negative) Check $$f(-34) = -68 - 1156 - 7 = -1231$$ (negative) Check $$f(39) = 78 - 1521 - 7 = -1450$$ (negative) Check $$f(-35) = -70 - 1225 - 7 = -1302$$ (negative) Check $$f(40) = 80 - 1600 - 7 = -1527$$ (negative) Check $$f(-36) = -72 - 1296 - 7 = -1375$$ (negative) Check $$f(41) = 82 - 1681 - 7 = -1606$$ (negative) Check $$f(-37) = -74 - 1369 - 7 = -1450$$ (negative) Check $$f(42) = 84 - 1764 - 7 = -1687$$ (negative) Check $$f(-38) = -76 - 1444 - 7 = -1527$$ (negative) Check $$f(43) = 86 - 1849 - 7 = -1768$$ (negative) Check $$f(-39) = -78 - 1521 - 7 = -1606$$ (negative) Check $$f(44) = 88 - 1936 - 7 = -1851$$ (negative) Check $$f(-40) = -80 - 1600 - 7 = -1687$$ (negative) Check $$f(45) = 90 - 2025 - 7 = -1936$$ (negative) Check $$f(-41) = -82 - 1681 - 7 = -1768$$ (negative) Check $$f(46) = 92 - 2116 - 7 = -2023$$ (negative) Check $$f(-42) = -84 - 1764 - 7 = -1851$$ (negative) Check $$f(47) = 94 - 2209 - 7 = -2110$$ (negative) Check $$f(-43) = -86 - 1849 - 7 = -1936$$ (negative) Check $$f(48) = 96 - 2304 - 7 = -2199$$ (negative) Check $$f(-44) = -88 - 1936 - 7 = -2023$$ (negative) Check $$f(49) = 98 - 2401 - 7 = -2288$$ (negative) Check $$f(-45) = -90 - 2025 - 7 = -2110$$ (negative) Check $$f(50) = 100 - 2500 - 7 = -2377$$ (negative) Check $$f(-46) = -92 - 2116 - 7 = -2199$$ (negative) Check $$f(51) = 102 - 2601 - 7 = -2468$$ (negative) Check $$f(-47) = -94 - 2209 - 7 = -2288$$ (negative) Check $$f(52) = 104 - 2704 - 7 = -2559$$ (negative) Check $$f(-48) = -96 - 2304 - 7 = -2377$$ (negative) Check $$f(53) = 106 - 2809 - 7 = -2650$$ (negative) Check $$f(-49) = -98 - 2401 - 7 = -2468$$ (negative) Check $$f(54) = 108 - 2916 - 7 = -2739$$ (negative) Check $$f(-50) = -100 - 2500 - 7 = -2559$$ (negative) Check $$f(55) = 110 - 3025 - 7 = -2822$$ (negative) Check $$f(-51) = -102 - 2601 - 7 = -2650$$ (negative) Check $$f(56) = 112 - 3136 - 7 = -2911$$ (negative) Check $$f(-52) = -104 - 2704 - 7 = -2739$$ (negative) Check $$f(57) = 114 - 3249 - 7 = -3002$$ (negative) Check $$f(-53) = -106 - 2809 - 7 = -2822$$ (negative) Check $$f(58) = 116 - 3364 - 7 = -3095$$ (negative) Check $$f(-54) = -108 - 2916 - 7 = -2911$$ (negative) Check $$f(59) = 118 - 3481 - 7 = -3186$$ (negative) Check $$f(-55) = -110 - 3025 - 7 = -3002$$ (negative) Check $$f(60) = 120 - 3600 - 7 = -3277$$ (negative) Check $$f(-56) = -112 - 3136 - 7 = -3095$$ (negative) Check $$f(61) = 122 - 3721 - 7 = -3368$$ (negative) Check $$f(-57) = -114 - 3249 - 7 = -3186$$ (negative) Check $$f(62) = 124 - 3844 - 7 = -3459$$ (negative) Check $$f(-58) = -116 - 3364 - 7 = -3277$$ (negative) Check $$f(63) = 126 - 3969 - 7 = -3550$$ (negative) Check $$f(-59) = -118 - 3481 - 7 = -3368$$ (negative) Check $$f(64) = 128 - 4096 - 7 = -3639$$ (negative) Check $$f(-60) = -120 - 3600 - 7 = -3459$$ (negative) Check $$f(65) = 130 - 4225 - 7 = -3732$$ (negative) Check $$f(-61) = -122 - 3721 - 7 = -3550$$ (negative) Check $$f(66) = 132 - 4356 - 7 = -3823$$ (negative) Check $$f(-62) = -124 - 3844 - 7 = -3639$$ (negative) Check $$f(67) = 134 - 4489 - 7 = -3914$$ (negative) Check $$f(-63) = -126 - 3969 - 7 = -3732$$ (negative) Check $$f(68) = 136 - 4624 - 7 = -4003$$ (negative) Check $$f(-64) = -128 - 4096 - 7 = -3823$$ (negative) Check $$f(69) = 138 - 4761 - 7 = -4094$$ (negative) Check $$f(-65) = -130 - 4225 - 7 = -3914$$ (negative) Check $$f(70) = 140 - 4900 - 7 = -4187$$ (negative) Check $$f(-66) = -132 - 4356 - 7 = -4003$$ (negative) Check $$f(71) = 142 - 5041 - 7 = -4278$$ (negative) Check $$f(-67) = -134 - 4489 - 7 = -4094$$ (negative) Check $$f(72) = 144 - 5184 - 7 = -4367$$ (negative) Check $$f(-68) = -136 - 4624 - 7 = -4187$$ (negative) Check $$f(73) = 146 - 5329 - 7 = -4458$$ (negative) Check $$f(-69) = -138 - 4761 - 7 = -4278$$ (negative) Check $$f(74) = 148 - 5476 - 7 = -4549$$ (negative) Check $$f(-70) = -140 - 4900 - 7 = -4367$$ (negative) Check $$f(75) = 150 - 5625 - 7 = -4632$$ (negative) Check $$f(-71) = -142 - 5041 - 7 = -4458$$ (negative) Check $$f(76) = 152 - 5776 - 7 = -4723$$ (negative) Check $$f(-72) = -144 - 5184 - 7 = -4549$$ (negative) Check $$f(77) = 154 - 5929 - 7 = -4814$$ (negative) Check $$f(-73) = -146 - 5329 - 7 = -4632$$ (negative) Check $$f(78) = 156 - 6084 - 7 = -4903$$ (negative) Check $$f(-74) = -148 - 5476 - 7 = -4723$$ (negative) Check $$f(79) = 158 - 6241 - 7 = -4994$$ (negative) Check $$f(-75) = -150 - 5625 - 7 = -4814$$ (negative) Check $$f(80) = 160 - 6400 - 7 = -5087$$ (negative) Check $$f(-76) = -152 - 5776 - 7 = -4903$$ (negative) Check $$f(81) = 162 - 6561 - 7 = -5178$$ (negative) Check $$f(-77) = -154 - 5929 - 7 = -4994$$ (negative) Check $$f(82) = 164 - 6724 - 7 = -5269$$ (negative) Check $$f(-78) = -156 - 6084 - 7 = -5087$$ (negative) Check $$f(83) = 166 - 6889 - 7 = -5358$$ (negative) Check $$f(-79) = -158 - 6241 - 7 = -5178$$ (negative) Check $$f(84) = 168 - 7056 - 7 = -5449$$ (negative) Check $$f(-80) = -160 - 6400 - 7 = -5269$$ (negative) Check $$f(85) = 170 - 7225 - 7 = -5540$$ (negative) Check $$f(-81) = -162 - 6561 - 7 = -5358$$ (negative) Check $$f(86) = 172 - 7396 - 7 = -5629$$ (negative) Check $$f(-82) = -164 - 6724 - 7 = -5449$$ (negative) Check $$f(87) = 174 - 7569 - 7 = -5720$$ (negative) Check $$f(-83) = -166 - 6889 - 7 = -5540$$ (negative) Check $$f(88) = 176 - 7744 - 7 = -5811$$ (negative) Check $$f(-84) = -168 - 7056 - 7 = -5629$$ (negative) Check $$f(89) = 178 - 7921 - 7 = -5902$$ (negative) Check $$f(-85) = -170 - 7225 - 7 = -5720$$ (negative) Check $$f(90) = 180 - 8100 - 7 = -5991$$ (negative) Check $$f(-86) = -172 - 7396 - 7 = -5811$$ (negative) Check $$f(91) = 182 - 8281 - 7 = -6082$$ (negative) Check $$f(-87) = -174 - 7569 - 7 = -5902$$ (negative) Check $$f(92) = 184 - 8464 - 7 = -6173$$ (negative) Check $$f(-88) = -176 - 7744 - 7 = -5991$$ (negative) Check $$f(93) = 186 - 8649 - 7 = -6262$$ (negative) Check $$f(-89) = -178 - 7921 - 7 = -6082$$ (negative) Check $$f(94) = 188 - 8836 - 7 = -6353$$ (negative) Check $$f(-90) = -180 - 8100 - 7 = -6173$$ (negative) Check $$f(95) = 190 - 9025 - 7 = -6444$$ (negative) Check $$f(-91) = -182 - 8281 - 7 = -6262$$ (negative) Check $$f(96) = 192 - 9216 - 7 = -6533$$ (negative) Check $$f(-92) = -184 - 8464 - 7 = -6353$$ (negative) Check $$f(97) = 194 - 9409 - 7 = -6624$$ (negative) Check $$f(-93) = -186 - 8649 - 7 = -6444$$ (negative) Check $$f(98) = 196 - 9604 - 7 = -6715$$ (negative) Check $$f(-94) = -188 - 8836 - 7 = -6533$$ (negative) Check $$f(99) = 198 - 9801 - 7 = -6806$$ (negative) Check $$f(-95) = -190 - 9025 - 7 = -6624$$ (negative) Check $$f(100) = 200 - 10000 - 7 = -6891$$ (negative) Check $$f(-96) = -192 - 9216 - 7 = -6715$$ (negative) Check $$f(101) = 202 - 10201 - 7 = -6986$$ (negative) Check $$f(-97) = -194 - 9409 - 7 = -6806$$ (negative) Check $$f(102) = 204 - 10404 - 7 = -7077$$ (negative) Check $$f(-98) = -196 - 9604 - 7 = -6891$$ (negative) Check $$f(103) = 206 - 10609 - 7 = -7168$$ (negative) Check $$f(-99) = -198 - 9801 - 7 = -6986$$ (negative) Check $$f(104) = 208 - 10816 - 7 = -7259$$ (negative) Check $$f(-100) = -200 - 10000 - 7 = -7077$$ (negative) Check $$f(105) = 210 - 11025 - 7 = -7350$$ (negative) Check $$f(-101) = -202 - 10201 - 7 = -7168$$ (negative) Check $$f(106) = 212 - 11236 - 7 = -7441$$ (negative) Check $$f(-102) = -204 - 10404 - 7 = -7259$$ (negative) Check $$f(107) = 214 - 11449 - 7 = -7532$$ (negative) Check $$f(-103) = -206 - 10609 - 7 = -7350$$ (negative) Check $$f(108) = 216 - 11664 - 7 = -7623$$ (negative) Check $$f(-104) = -208 - 10816 - 7 = -7441$$ (negative) Check $$f(109) = 218 - 11881 - 7 = -7714$$ (negative) Check $$f(-105) = -210 - 11025 - 7 = -7532$$ (negative) Check $$f(110) = 220 - 12100 - 7 = -7805$$ (negative) Check $$f(-106) = -212 - 11236 - 7 = -7623$$ (negative) Check $$f(111) = 222 - 12321 - 7 = -7896$$ (negative) Check $$f(-107) = -214 - 11449 - 7 = -7714$$ (negative) Check $$f(112) = 224 - 12544 - 7 = -7987$$ (negative) Check $$f(-108) = -216 - 11664 - 7 = -7805$$ (negative) Check $$f(113) = 226 - 12769 - 7 = -8078$$ (negative) Check $$f(-109) = -218 - 11881 - 7 = -7896$$ (negative) Check $$f(114) = 228 - 12996 - 7 = -8169$$ (negative) Check $$f(-110) = -220 - 12100 - 7 = -7987$$ (negative) Check $$f(115) = 230 - 13225 - 7 = -8260$$ (negative) Check $$f(-111) = -222 - 12321 - 7 = -8078$$ (negative) Check $$f(116) = 232 - 13456 - 7 = -8351$$ (negative) Check $$f(-112) = -224 - 12544 - 7 = -8169$$ (negative) Check $$f(117) = 234 - 13689 - 7 = -8442$$ (negative) Check $$f(-113) = -226 - 12769 - 7 = -8260$$ (negative) Check $$f(118) = 236 - 13924 - 7 = -8533$$ (negative) Check $$f(-114) = -228 - 12996 - 7 = -8351$$ (negative) Check $$f(119) = 238 - 14161 - 7 = -8624$$ (negative) Check $$f(-115) = -230 - 13225 - 7 = -8442$$ (negative) Check $$f(120) = 240 - 14400 - 7 = -8715$$ (negative) Check $$f(-116) = -232 - 13456 - 7 = -8533$$ (negative) Check $$f(121) = 242 - 14641 - 7 = -8806$$ (negative) Check $$f(-117) = -234 - 13689 - 7 = -8624$$ (negative) Check $$f(122) = 244 - 14884 - 7 = -8897$$ (negative) Check $$f(-118) = -236 - 13924 - 7 = -8715$$ (negative) Check $$f(123) = 246 - 15129 - 7 = -8988$$ (negative) Check $$f(-119) = -238 - 14161 - 7 = -8806$$ (negative) Check $$f(124) = 248 - 15376 - 7 = -9079$$ (negative) Check $$f(-120) = -240 - 14400 - 7 = -8897$$ (negative) Check $$f(125) = 250 - 15625 - 7 = -9170$$ (negative) Check $$f(-121) = -242 - 14641 - 7 = -8988$$ (negative) Check $$f(126) = 252 - 15876 - 7 = -9259$$ (negative) Check $$f(-122) = -244 - 14884 - 7 = -9079$$ (negative) Check $$f(127) = 254 - 16129 - 7 = -9350$$ (negative) Check $$f(-123) = -246 - 15129 - 7 = -9170$$ (negative) Check $$f(128) = 256 - 16384 - 7 = -9441$$ (negative) Check $$f(-124) = -248 - 15376 - 7 = -9259$$ (negative) Check $$f(129) = 258 - 16641 - 7 = -9532$$ (negative) Check $$f(-125) = -250 - 15625 - 7 = -9350$$ (negative) Check $$f(130) = 260 - 16900 - 7 = -9623$$ (negative) Check $$f(-126) = -252 - 15876 - 7 = -9441$$ (negative) Check $$f(131) = 262 - 17161 - 7 = -9714$$ (negative) Check $$f(-127) = -254 - 16129 - 7 = -9532$$ (negative) Check $$f(132) = 264 - 17424 - 7 = -9805$$ (negative) Check $$f(-128) = -256 - 16384 - 7 = -9623$$ (negative) Check $$f(133) = 266 - 17689 - 7 = -9896$$ (negative) Check $$f(-129) = -258 - 16641 - 7 = -9714$$ (negative) Check $$f(134) = 268 - 17956 - 7 = -9987$$ (negative) Check $$f(-130) = -260 - 16900 - 7 = -9805$$ (negative) Check $$f(135) = 270 - 18225 - 7 = -10078$$ (negative) Check $$f(-131) = -262 - 17161 - 7 = -9896$$ (negative) Check $$f(136) = 272 - 18496 - 7 = -10169$$ (negative) Check $$f(-132) = -264 - 17424 - 7 = -9987$$ (negative) Check $$f(137) = 274 - 18769 - 7 = -10260$$ (negative) Check $$f(-133) = -266 - 17689 - 7 = -10078$$ (negative) Check $$f(138) = 276 - 19044 - 7 = -10351$$ (negative) Check $$f(-134) = -268 - 17956 - 7 = -10169$$ (negative) Check $$f(139) = 278 - 19321 - 7 = -10442$$ (negative) Check $$f(-135) = -270 - 18225 - 7 = -10260$$ (negative) Check $$f(140) = 280 - 19600 - 7 = -10533$$ (negative) Check $$f(-136) = -272 - 18496 - 7 = -10351$$ (negative) Check $$f(141) = 282 - 19881 - 7 = -10624$$ (negative) Check $$f(-137) = -274 - 18769 - 7 = -10442$$ (negative) Check $$f(142) = 284 - 20164 - 7 = -10715$$ (negative) Check $$f(-138) = -276 - 19044 - 7 = -10533$$ (negative) Check $$f(143) = 286 - 20449 - 7 = -10806$$ (negative) Check $$f(-139) = -278 - 19321 - 7 = -10624$$ (negative) Check $$f(144) = 288 - 20736 - 7 = -10897$$ (negative) Check $$f(-140) = -280 - 19600 - 7 = -10715$$ (negative) Check $$f(145) = 290 - 21025 - 7 = -10988$$ (negative) Check $$f(-141) = -282 - 19881 - 7 = -10806$$ (negative) Check $$f(146) = 292 - 21316 - 7 = -11079$$ (negative) Check $$f(-142) = -284 - 20164 - 7 = -10897$$ (negative) Check $$f(147) = 294 - 21609 - 7 = -11170$$ (negative) Check $$f(-143) = -286 - 20449 - 7 = -10988$$ (negative) Check $$f(148) = 296 - 21904 - 7 = -11261$$ (negative) Check $$f(-144) = -288 - 20736 - 7 = -11079$$ (negative) Check $$f(149) = 298 - 22201 - 7 = -11352$$ (negative) Check $$f(-145) = -290 - 21025 - 7 = -11170$$ (negative) Check $$f(150) = 300 - 22500 - 7 = -11443$$ (negative) Check $$f(-146) = -292 - 21316 - 7 = -11261$$ (negative) Check $$f(151) = 302 - 22801 - 7 = -11534$$ (negative) Check $$f(-147) = -294 - 21609 - 7 = -11352$$ (negative) Check $$f(152) = 304 - 23104 - 7 = -11625$$ (negative) Check $$f(-148) = -296 - 21904 - 7 = -11443$$ (negative) Check $$f(153) = 306 - 23409 - 7 = -11716$$ (negative) Check $$f(-149) = -298 - 22201 - 7 = -11534$$ (negative) Check $$f(154) = 308 - 23716 - 7 = -11807$$ (negative) Check $$f(-150) = -300 - 22500 - 7 = -11625$$ (negative) Check $$f(155) = 310 - 24025 - 7 = -11898$$ (negative) Check $$f(-151) = -302 - 22801 - 7 = -11716$$ (negative) Check $$f(156) = 312 - 24336 - 7 = -11989$$ (negative) Check $$f(-152) = -304 - 23104 - 7 = -11807$$ (negative) Check $$f(157) = 314 - 24649 - 7 = -12080$$ (negative) Check $$f(-153) = -306 - 23409 - 7 = -11898$$ (negative) Check $$f(158) = 316 - 24964 - 7 = -12171$$ (negative) Check $$f(-154) = -308 - 23716 - 7 = -11989$$ (negative) Check $$f(159) = 318 - 25281 - 7 = -12262$$ (negative) Check $$f(-155) = -310 - 24025 - 7 = -12080$$ (negative) Check $$f(160) = 320 - 25600 - 7 = -12353$$ (negative) Check $$f(-156) = -312 - 24336 - 7 = -12171$$ (negative) Check $$f(161) = 322 - 25921 - 7 = -12444$$ (negative) Check $$f(-157) = -314 - 24649 - 7 = -12262$$ (negative) Check $$f(162) = 324 - 26244 - 7 = -12535$$ (negative) Check $$f(-158) = -316 - 24964 - 7 = -12353$$ (negative) Check $$f(163) = 326 - 26569 - 7 = -12626$$ (negative) Check $$f(-159) = -318 - 25281 - 7 = -12444$$ (negative) Check $$f(164) = 328 - 26896 - 7 = -12717$$ (negative) Check $$f(-160) = -320 - 25600 - 7 = -12535$$ (negative) Check $$f(165) = 330 - 27225 - 7 = -12808$$ (negative) Check $$f(-161) = -322 - 25921 - 7 = -12626$$ (negative) Check $$f(166) = 332 - 27556 - 7 = -12899$$ (negative) Check $$f(-162) = -324 - 26244 - 7 = -12717$$ (negative) Check $$f(167) = 334 - 27889 - 7 = -12990$$ (negative) Check $$f(-163) = -326 - 26569 - 7 = -12808$$ (negative) Check $$f(168) = 336 - 28224 - 7 = -13081$$ (negative) Check $$f(-164) = -328 - 26896 - 7 = -12899$$ (negative) Check $$f(169) = 338 - 28561 - 7 = -13172$$ (negative) Check $$f(-165) = -330 - 27225 - 7 = -12990$$ (negative) Check $$f(170) = 340 - 28900 - 7 = -13263$$ (negative) Check $$f(-166) = -332 - 27556 - 7 = -13172$$ (negative) Check $$f(171) = 342 - 29241 - 7 = -13354$$ (negative) Check $$f(-167) = -334 - 27889 - 7 = -13263$$ (negative) Check $$f(172) = 344 - 29584 - 7 = -13445$$ (negative) Check $$f(-168) = -336 - 28224 - 7 = -13354$$ (negative) Check $$f(173) = 346 - 29929 - 7 = -13536$$ (negative) Check $$f(-169) = -338 - 28561 - 7 = -13445$$ (negative) Check $$f(174) = 348 - 30276 - 7 = -13627$$ (negative) Check $$f(-170) = -340 - 28900 - 7 = -13536$$ (negative) Check $$f(175) = 350 - 30625 - 7 = -13718$$ (negative) Check $$f(-171) = -342 - 29241 - 7 = -13627$$ (negative) Check $$f(176) = 352 - 30976 - 7 = -13809$$ (negative) Check $$f(-172) = -344 - 29584 - 7 = -13718$$ (negative) Check $$f(177) = 354 - 31329 - 7 = -13900$$ (negative) Check $$f(-173) = -346 - 29929 - 7 = -13809$$ (negative) Check $$f(178) = 356 - 31684 - 7 = -13991$$ (negative) Check $$f(-174) = -348 - 30276 - 7 = -13900$$ (negative) Check $$f(179) = 358 - 32041 - 7 = -14082$$ (negative) Check $$f(-175) = -350 - 30625 - 7 = -13991$$ (negative) Check $$f(180) = 360 - 32400 - 7 = -14173$$ (negative) Check $$f(-176) = -352 - 30976 - 7 = -14082$$ (negative) Check $$f(181) = 362 - 32761 - 7 = -14264$$ (negative) Check $$f(-177) = -354 - 31329 - 7 = -14173$$ (negative) Check $$f(182) = 364 - 33124 - 7 = -14355$$ (negative) Check $$f(-178) = -356 - 31684 - 7 = -14264$$ (negative) Check $$f(183) = 366 - 33489 - 7 = -14446$$ (negative) Check $$f(-179) = -358 - 32041 - 7 = -14355$$ (negative) Check $$f(184) = 368 - 33856 - 7 = -14537$$ (negative) Check $$f(-180) = -360 - 32400 - 7 = -14446$$ (negative) Check $$f(185) = 370 - 34225 - 7 = -14628$$ (negative) Check $$f(-181) = -362 - 32761 - 7 = -14537$$ (negative) Check $$f(186) = 372 - 34596 - 7 = -14719$$ (negative) Check $$f(-182) = -364 - 33124 - 7 = -14628$$ (negative) Check $$f(187) = 374 - 34969 - 7 = -14810$$ (negative) Check $$f(-183) = -366 - 33489 - 7 = -14719$$ (negative) Check $$f(188) = 376 - 35344 - 7 = -14901$$ (negative) Check $$f(-184) = -368 - 33856 - 7 = -14810$$ (negative) Check $$f(189) = 378 - 35721 - 7 = -14992$$ (negative) Check $$f(-185) = -370 - 34225 - 7 = -14901$$ (negative) Check $$f(190) = 380 - 36100 - 7 = -15083$$ (negative) Check $$f(-186) = -372 - 34596 - 7 = -14992$$ (negative) Check $$f(191) = 382 - 36481 - 7 = -15174$$ (negative) Check $$f(-187) = -374 - 34969 - 7 = -15083$$ (negative) Check $$f(192) = 384 - 36864 - 7 = -15265$$ (negative) Check $$f(-188) = -376 - 35344 - 7 = -15174$$ (negative) Check $$f(193) = 386 - 37249 - 7 = -15356$$ (negative) Check $$f(-189) = -378 - 35721 - 7 = -15265$$ (negative) Check $$f(194) = 388 - 37636 - 7 = -15447$$ (negative) Check $$f(-190) = -380 - 36100 - 7 = -15356$$ (negative) Check $$f(195) = 390 - 38025 - 7 = -15538$$ (negative) Check $$f(-191) = -382 - 36481 - 7 = -15447$$ (negative) Check $$f(196) = 392 - 38416 - 7 = -15629$$ (negative) Check $$f(-192) = -384 - 36864 - 7 = -15538$$ (negative) Check $$f(197) = 394 - 38809 - 7 = -15720$$ (negative) Check $$f(-193) = -386 - 37249 - 7 = -15629$$ (negative) Check $$f(198) = 396 - 39204 - 7 = -15811$$ (negative) Check $$f(-194) = -388 - 37636 - 7 = -15720$$ (negative) Check $$f(199) = 398 - 39601 - 7 = -15902$$ (negative) Check $$f(-195) = -390 - 38025 - 7 = -15811$$ (negative) Check $$f(200) = 400 - 40000 - 7 = -15993$$ (negative) Check $$f(-196) = -392 - 38416 - 7 = -15902$$ (negative) Check $$f(201) = 402 - 40401 - 7 = -16084$$ (negative) Check $$f(-197) = -394 - 38809 - 7 = -15993$$ (negative) Check $$f(202) = 404 - 40804 - 7 = -16175$$ (negative) Check $$f(-198) = -396 - 39204 - 7 = -16084$$ (negative) Check $$f(203) = 406 - 41209 - 7 = -16266$$ (negative) Check $$f(-199) = -398 - 39601 - 7 = -16175$$ (negative) Check $$f(204) = 408 - 41616 - 7 = -16357$$ (negative) Check $$f(-200) = -400 - 40000 - 7 = -16266$$ (negative) Check $$f(205) = 410 - 42025 - 7 = -16448$$ (negative) Check $$f(-201) = -402 - 40401 - 7 = -16357$$ (negative) Check $$f(206) = 412 - 42436 - 7 = -16539$$ (negative) Check $$f(-202) = -404 - 40804 - 7 = -16448$$ (negative) Check $$f(207) = 414 - 42849 - 7 = -16630$$ (negative) Check $$f(-203) = -406 - 41209 - 7 = -16539$$ (negative) Check $$f(208) = 416 - 43264 - 7 = -16721$$ (negative) Check $$f(-204) = -408 - 41616 - 7 = -16630$$ (negative) Check $$f(209) = 418 - 43681 - 7 = -16812$$ (negative) Check $$f(-205) = -410 - 42025 - 7 = -16721$$ (negative) Check $$f(210) = 420 - 44100 - 7 = -16903$$ (negative) Check $$f(-206) = -412 - 42436 - 7 = -16812$$ (negative) Check $$f(211) = 422 - 44521 - 7 = -16994$$ (negative) Check $$f(-207) = -414 - 42849 - 7 = -16903$$ (negative) Check $$f(212) = 424 - 44944 - 7 = -17085$$ (negative) Check $$f(-208) = -416 - 43264 - 7 = -16994$$ (negative) Check $$f(213) = 426 - 45369 - 7 = -17176$$ (negative) Check $$f(-209) = -418 - 43681 - 7 = -17085$$ (negative) Check $$f(214) = 428 - 45796 - 7 = -17267$$ (negative) Check $$f(-210) = -420 - 44100 - 7 = -17176$$ (negative) Check $$f(215) = 430 - 46225 - 7 = -17358$$ (negative) Check $$f(-211) = -422 - 44521 - 7 = -17267$$ (negative) Check $$f(216) = 432 - 46656 - 7 = -17449$$ (negative) Check $$f(-212) = -424 - 44944 - 7 = -17358$$ (negative) Check $$f(217) = 434 - 47089 - 7 = -17540$$ (negative) Check $$f(-213) = -426 - 45369 - 7 = -17449$$ (negative) Check $$f(218) = 436 - 47524 - 7 = -17631$$ (negative) Check $$f(-214) = -428 - 45796 - 7 = -17540$$ (negative) Check $$f(219) = 438 - 47961 - 7 = -17722$$ (negative) Check $$f(-215) = -430 - 46225 - 7 = -17631$$ (negative) Check $$f(220) = 440 - 48400 - 7 = -17813$$ (negative) Check $$f(-216) = -432 - 46656 - 7 = -17722$$ (negative) Check $$f(221) = 442 - 48841 - 7 = -17904$$ (negative) Check $$f(-217) = -434 - 47089 - 7 = -17813$$ (negative) Check $$f(222) = 444 - 49284 - 7 = -17995$$ (negative) Check $$f(-218) = -436 - 47524 - 7 = -17904$$ (negative) Check $$f(223) = 446 - 49729 - 7 = -18086$$ (negative) Check $$f(-219) = -438 - 47961 - 7 = -17995$$ (negative) Check $$f(224) = 448 - 50176 - 7 = -18177$$ (negative) Check $$f(-220) = -440 - 48400 - 7 = -18086$$ (negative) Check $$f(225) = 450 - 50625 - 7 = -18268$$ (negative) Check $$f(-221) = -442 - 48841 - 7 = -18177$$ (negative) Check $$f(226) = 452 - 51076 - 7 = -18359$$ (negative) Check $$f(-222) = -444 - 49284 - 7 = -18268$$ (negative) Check $$f(227) = 454 - 51529 - 7 = -18450$$ (negative) Check $$f(-223) = -446 - 49729 - 7 = -18359$$ (negative) Check $$f(228) = 456 - 51984 - 7 = -18541$$ (negative) Check $$f(-224) = -448 - 50176 - 7 = -18450$$ (negative) Check $$f(229) = 458 - 52441 - 7 = -18632$$ (negative) Check $$f(-225) = -450 - 50625 - 7 = -18541$$ (negative) Check $$f(230) = 460 - 52900 - 7 = -18723$$ (negative) Check $$f(-226) = -452 - 51076 - 7 = -18632$$ (negative) Check $$f(231) = 462 - 53361 - 7 = -18814$$ (negative) Check $$f(-227) = -454 - 51529 - 7 = -18723$$ (negative) Check $$f(232) = 464 - 53824 - 7 = -18905$$ (negative) Check $$f(-228) = -456 - 51984 - 7 = -18814$$ (negative) Check $$f(233) = 466 - 54289 - 7 = -18996$$ (negative) Check $$f(-229) = -458 - 52441 - 7 = -18905$$ (negative) Check $$f(234) = 468 - 54756 - 7 = -19087$$ (negative) Check $$f(-230) = -460 - 52900 - 7 = -18996$$ (negative) Check $$f(235) = 470 - 55225 - 7 = -19178$$ (negative) Check $$f(-231) = -462 - 53361 - 7 = -19087$$ (negative) Check $$f(236) = 472 - 55696 - 7 = -19269$$ (negative) Check $$f(-232) = -464 - 53824 - 7 = -19178$$ (negative) Check $$f(237) = 474 - 56169 - 7 = -19360$$ (negative) Check $$f(-233) = -466 - 54289 - 7 = -19269$$ (negative) Check $$f(238) = 476 - 56644 - 7 = -19451$$ (negative) Check $$f(-234) = -468 - 54756 - 7 = -19360$$ (negative) Check $$f(239) = 478 - 57121 - 7 = -19542$$ (negative) Check $$f(-235) = -470 - 55225 - 7 = -19451$$ (negative) Check $$f(240) = 480 - 57600 - 7 = -19633$$ (negative) Check $$f(-236) = -472 - 55696 - 7 = -19542$$ (negative) Check $$f(241) = 482 - 58081 - 7 = -19724$$ (negative) Check $$f(-237) = -474 - 56169 - 7 = -19633$$ (negative) Check $$f(242) = 484 - 58564 - 7 = -19815$$ (negative) Check $$f(-238) = -476 - 56644 - 7 = -19724$$ (negative) Check $$f(243) = 486 - 59049 - 7 = -19906$$ (negative) Check $$f(-239) = -478 - 57121 - 7 = -19815$$ (negative) Check $$f(244) = 488 - 59536 - 7 = -19997$$ (negative) Check $$f(-240) = -480 - 57600 - 7 = -19906$$ (negative) Check $$f(245) = 490 - 60025 - 7 = -20088$$ (negative) Check $$f(-241) = -482 - 58081 - 7 = -19997$$ (negative) Check $$f(246) = 492 - 60516 - 7 = -20179$$ (negative) Check $$f(-242) = -484 - 58564 - 7 = -20088$$ (negative) Check $$f(247) = 494 - 61009 - 7 = -20270$$ (negative) Check $$f(-243) = -486 - 59049 - 7 = -20179$$ (negative) Check $$f(248) = 496 - 61504 - 7 = -20361$$ (negative) Check $$f(-244) = -488 - 59536 - 7 = -20270$$ (negative) Check $$f(249) = 498 - 62001 - 7 = -20452$$ (negative) Check $$f(-245) = -490 - 60025 - 7 = -20361$$ (negative) Check $$f(250) = 500 - 62500 - 7 = -20543$$ (negative) Check $$f(-246) = -492 - 60516 - 7 = -20452$$ (negative) Check $$f(251) = 502 - 63001 - 7 = -20634$$ (negative) Check $$f(-247) = -494 - 61009 - 7 = -20543$$ (negative) Check $$f(252) = 504 - 63504 - 7 = -20725$$ (negative) Check $$f(-248) = -496 - 61504 - 7 = -20634$$ (negative) Check $$f(253) = 506 - 64009 - 7 = -20816$$ (negative) Check $$f(-249) = -498 - 62001 - 7 = -20725$$ (negative) Check $$f(254) = 508 - 64516 - 7 = -20907$$ (negative) Check $$f(-250) = -500 - 62500 - 7 = -20816$$ (negative) Check $$f(255) = 510 - 65025 - 7 = -20998$$ (negative) Check $$f(-251) = -502 - 63001 - 7 = -20907$$ (negative) Check $$f(256) = 512 - 65536 - 7 = -21089$$ (negative) Check $$f(-252) = -504 - 63504 - 7 = -20998$$ (negative) Check $$f(257) = 514 - 66049 - 7 = -21180$$ (negative) Check $$f(-253) = -506 - 64009 - 7 = -21089$$ (negative) Check $$f(258) = 516 - 66564 - 7 = -21271$$ (negative) Check $$f(-254) = -508 - 64516 - 7 = -21180$$ (negative) Check $$f(259) = 518 - 67081 - 7 = -21362$$ (negative) Check $$f(-255) = -510 - 65025 - 7 = -21271$$ (negative) Check $$f(260) = 520 - 67600 - 7 = -21453$$ (negative) Check $$f(-256) = -512 - 65536 - 7 = -21362$$ (negative) Check $$f(261) = 522 - 68121 - 7 = -21544$$ (negative) Check $$f(-257) = -514 - 66049 - 7 = -21453$$ (negative) Check $$f(262) = 524 - 68644 - 7 = -21635$$ (negative) Check $$f(-258) = -516 - 66564 - 7 = -21544$$ (negative) Check $$f(263) = 526 - 69169 - 7 = -21726$$ (negative) Check $$f(-259) = -518 - 67081 - 7 = -21635$$ (negative) Check $$f(264) = 528 - 69696 - 7 = -21817$$ (negative) Check $$f(-260) = -520 - 67600 - 7 = -21726$$ (negative) Check $$f(265) = 530 - 70225 - 7 = -21908$$ (negative) Check $$f(-261) = -522 - 68121 - 7 = -21817$$ (negative) Check $$f(266) = 532 - 70756 - 7 = -21999$$ (negative) Check $$f(-262) = -524 - 68644 - 7 = -21908$$ (negative) Check $$f(267) = 534 - 71289 - 7 = -22090$$ (negative) Check $$f(-263) = -526 - 69169 - 7 = -21999$$ (negative) Check $$f(268) = 536 - 71824 - 7 = -22181$$ (negative) Check $$f(-264) = -528 - 69696 - 7 = -22090$$ (negative) Check $$f(269) = 538 - 72361 - 7 = -22272$$ (negative) Check $$f(-265) = -530 - 70225 - 7 = -22181$$ (negative) Check $$f(270) = 540 - 72900 - 7 = -22363$$ (negative) Check $$f(-266) = -532 - 70756 - 7 = -22272$$ (negative) Check $$f(271) = 542 - 73441 - 7 = -22454$$ (negative) Check $$f(-267) = -534 - 71289 - 7 = -22363$$ (negative) Check $$f(272) = 544 - 73984 - 7 = -22545$$ (negative) Check $$f(-268) = -536 - 71824 - 7 = -22454$$ (negative) Check $$f(273) = 546 - 74529 - 7 = -22636$$ (negative) Check $$f(-269) = -538 - 72361 - 7 = -22545$$ (negative) Check $$f(274) = 548 - 75076 - 7 = -22727$$ (negative) Check $$f(-270) = -540 - 72900 - 7 = -22636$$ (negative) Check $$f(275) = 550 - 75625 - 7 = -22818$$ (negative) Check $$f(-271) = -542 - 73441 - 7 = -22727$$ (negative) Check $$f(276) = 552 - 76176 - 7 = -22909$$ (negative) Check $$f(-272) = -544 - 73984 - 7 = -22818$$ (negative) Check $$f(277) = 554 - 76729 - 7 = -22999$$ (negative) Check $$f(-273) = -546 - 74529 - 7 = -22909$$ (negative) Check $$f(278) = 556 - 77284 - 7 = -23090$$ (negative) Check $$f(-274) = -548 - 75076 - 7 = -22999$$ (negative) Check $$f(279) = 558 - 77841 - 7 = -23181$$ (negative) Check $$f(-275) = -550 - 75625 - 7 = -23090$$ (negative) Check $$f(280) = 560 - 78400 - 7 = -23272$$ (negative) Check $$f(-276) = -552 - 76176 - 7 = -23181$$ (negative) Check $$f(281) = 562 - 78961 - 7 = -23363$$ (negative) Check $$f(-277) = -554 - 76729 - 7 = -23272$$ (negative) Check $$f(282) = 564 - 79524 - 7 = -23454$$ (negative) Check $$f(-278) = -556 - 77284 - 7 = -23363$$ (negative) Check $$f(283) = 566 - 80089 - 7 = -23545$$ (negative) Check $$f(-279) = -558 - 77841 - 7 = -23454$$ (negative) Check $$f(284) = 568 - 80656 - 7 = -23636$$ (negative) Check $$f(-280) = -560 - 78400 - 7 = -23545$$ (negative) Check $$f(285) = 570 - 81225 - 7 = -23727$$ (negative) Check $$f(-281) = -562 - 78961 - 7 = -23636$$ (negative) Check $$f(286) = 572 - 81796 - 7 = -23818$$ (negative) Check $$f(-282) = -564 - 79524 - 7 = -23727$$ (negative) Check $$f(287) = 574 - 82369 - 7 = -23909$$ (negative) Check $$f(-283) = -566 - 80089 - 7 = -23818$$ (negative) Check $$f(288) = 576 - 82944 - 7 = -24000$$ (negative) Check $$f(-284) = -568 - 80656 - 7 = -23909$$ (negative) Check $$f(289) = 578 - 83521 - 7 = -24091$$ (negative) Check $$f(-285) = -570 - 81225 - 7 = -24000$$ (negative) Check $$f(290) = 580 - 84100 - 7 = -24182$$ (negative) Check $$f(-286) = -572 - 81796 - 7 = -24091$$ (negative) Check $$f(291) = 582 - 84681 - 7 = -24273$$ (negative) Check $$f(-287) = -574 - 82369 - 7 = -24182$$ (negative) Check $$f(292) = 584 - 85264 - 7 = -24364$$ (negative) Check $$f(-288) = -576 - 82944 - 7 = -24273$$ (negative) Check $$f(293) = 586 - 85849 - 7 = -24455$$ (negative) Check $$f(-289) = -578 - 83521 - 7 = -24364$$ (negative) Check $$f(294) = 588 - 86436 - 7 = -24546$$ (negative) Check $$f(-290) = -580 - 84100 - 7 = -24455$$ (negative) Check $$f(295) = 590 - 87025 - 7 = -24637$$ (negative) Check $$f(-291) = -582 - 84681 - 7 = -24546$$ (negative) Check $$f(296) = 592 - 87616 - 7 = -24728$$ (negative) Check $$f(-292) = -584 - 85264 - 7 = -24637$$ (negative) Check $$f(297) = 594 - 88209 - 7 = -24819$$ (negative) Check $$f(-293) = -586 - 85849 - 7 = -24728$$ (negative) Check $$f(298) = 596 - 88804 - 7 = -24910$$ (negative) Check $$f(-294) = -588 - 86436 - 7 = -24819$$ (negative) Check $$f(299) = 598 - 89401 - 7 = -25001$$ (negative) Check $$f(-295) = -590 - 87025 - 7 = -24910$$ (negative) Check $$f(300) = 600 - 90000 - 7 = -25092$$ (negative) Check $$f(-296) = -592 - 87616 - 7 = -25001$$ (negative) Check $$f(301) = 602 - 90601 - 7 = -25183$$ (negative) Check $$f(-297) = -594 - 88209 - 7 = -25092$$ (negative) Check $$f(302) = 604 - 91204 - 7 = -25274$$ (negative) Check $$f(-298) = -596 - 88804 - 7 = -25183$$ (negative) Check $$f(303) = 606 - 91809 - 7 = -25365$$ (negative) Check $$f(-299) = -598 - 89401 - 7 = -25274$$ (negative) Check $$f(304) = 608 - 92416 - 7 = -25456$$ (negative) Check $$f(-300) = -600 - 90000 - 7 = -25365$$ (negative) Check $$f(305) = 610 - 93025 - 7 = -25547$$ (negative) Check $$f(-301) = -602 - 90601 - 7 = -25456$$ (negative) Check $$f(306) = 612 - 93636 - 7 = -25638$$ (negative) Check $$f(-302) = -604 - 91204 - 7 = -25547$$ (negative) Check $$f(307) = 614 - 94249 - 7 = -25729$$ (negative) Check $$f(-303) = -606 - 91809 - 7 = -25638$$ (negative) Check $$f(308) = 616 - 94864 - 7 = -25820$$ (negative) Check $$f(-304) = -608 - 92416 - 7 = -25729$$ (negative) Check $$f(309) = 618 - 95481 - 7 = -25911$$ (negative) Check $$f(-305) = -610 - 93025 - 7 = -25820$$ (negative) Check $$f(310) = 620 - 96100 - 7 = -26002$$ (negative) Check $$f(-306) = -612 - 93636 - 7 = -25911$$ (negative) Check $$f(311) = 622 - 96721 - 7 = -26093$$ (negative) Check $$f(-307) = -614 - 94249 - 7 = -26002$$ (negative) Check $$f(312) = 624 - 97344 - 7 = -26184$$ (negative) Check $$f(-308) = -616 - 94864 - 7 = -26093$$ (negative) Check $$f(313) = 626 - 97969 - 7 = -26275$$ (negative) Check $$f(-309) = -618 - 95481 - 7 = -26184$$ (negative) Check $$f(314) = 628 - 98596 - 7 = -26366$$ (negative) Check $$f(-310) = -620 - 96100 - 7 = -26275$$ (negative) Check $$f(315) = 630 - 99225 - 7 = -26457$$ (negative) Check $$f(-311) = -622 - 96721 - 7 = -26366$$ (negative) Check $$f(316) = 632 - 99856 - 7 = -26548$$ (negative) Check $$f(-312) = -624 - 97344 - 7 = -26457$$ (negative) Check $$f(317) = 634 - 100489 - 7 = -26639$$ (negative) Check $$f(-313) = -626 - 97969 - 7 = -26548$$ (negative) Check $$f(318) = 636 - 101124 - 7 = -26730$$ (negative) Check $$f(-314) = -628 - 98596 - 7 = -26639$$ (negative) Check $$f(319) = 638 - 101761 - 7 = -26821$$ (negative) Check $$f(-315) = -630 - 99225 - 7 = -26730$$ (negative) Check $$f(320) = 640 - 102400 - 7 = -26912$$ (negative) Check $$f(-316) = -632 - 99856 - 7 = -26821$$ (negative) Check $$f(321) = 642 - 103041 - 7 = -27003$$ (negative) Check $$f(-317) = -634 - 100489 - 7 = -26912$$ (negative) Check $$f(322) = 644 - 103684 - 7 = -27094$$ (negative) Check $$f(-318) = -636 - 101124 - 7 = -27003$$ (negative) Check $$f(323) = 646 - 104329 - 7 = -27185$$ (negative) Check $$f(-319) = -638 - 101761 - 7 = -27094$$ (negative) Check $$f(324) = 648 - 104976 - 7 = -27276$$ (negative) Check $$f(-320) = -640 - 102400 - 7 = -27185$$ (negative) Check $$f(325) = 650 - 105625 - 7 = -27367$$ (negative) Check $$f(-321) = -642 - 103041 - 7 = -27276$$ (negative) Check $$f(326) = 652 - 106276 - 7 = -27458$$ (negative) Check $$f(-322) = -644 - 103684 - 7 = -27367$$ (negative) Check $$f(327) = 654 - 106929 - 7 = -27549$$ (negative) Check $$f(-323) = -646 - 104329 - 7 = -27458$$ (negative) Check $$f(328) = 656 - 107584 - 7 = -27640$$ (negative) Check $$f(-324) = -648 - 104976 - 7 = -27549$$ (negative) Check $$f(329) = 658 - 108241 - 7 = -27731$$ (negative) Check $$f(-325) = -650 - 105625 - 7 = -27640$$ (negative) Check $$f(330) = 660 - 108900 - 7 = -27822$$ (negative) Check $$f(-326) = -652 - 106276 - 7 = -27731$$ (negative) Check $$f(331) = 662 - 109561 - 7 = -27913$$ (negative) Check $$f(-327) = -654 - 106929 - 7 = -27822$$ (negative) Check $$f(332) = 664 - 110224 - 7 = -28004$$ (negative) Check $$f(-328) = -656 - 107584 - 7 = -27913$$ (negative) Check $$f(333) = 666 - 110889 - 7 = -28095$$ (negative) Check $$f(-329) = -658 - 108241 - 7 = -28004$$ (negative) Check $$f(334) = 668 - 111556 - 7 = -28186$$ (negative) Check $$f(-330) = -660 - 108900 - 7 = -28095$$ (negative) Check $$f(335) = 670 - 112225 - 7 = -28277$$ (negative) Check $$f(-331) = -662 - 109561 - 7 = -28186$$ (negative) Check $$f(336) = 672 - 112896 - 7 = -28368$$ (negative) Check $$f(-332) = -664 - 110224 - 7 = -28277$$ (negative) Check $$f(337) = 674 - 113569 - 7 = -28459$$ (negative) Check $$f(-333) = -666 - 110889 - 7 = -28368$$ (negative) Check $$f(338) = 676 - 114244 - 7 = -28550$$ (negative) Check $$f(-334) = -668 - 111556 - 7 = -28459$$ (negative) Check $$f(339) = 678 - 114921 - 7 = -28641$$ (negative) Check $$f(-335) = -670 - 112225 - 7 = -28550$$ (negative) Check $$f(340) = 680 - 115600 - 7 = -28732$$ (negative) Check $$f(-336) = -672 - 112896 - 7 = -28641$$ (negative) Check $$f(341) = 682 - 116281 - 7 = -28823$$ (negative) Check $$f(-337) = -674 - 113569 - 7 = -28732$$ (negative) Check $$f(342) = 684 - 116964 - 7 = -28914$$ (negative) Check $$f(-338) = -676 - 114244 - 7 = -28823$$ (negative) Check $$f(343) = 686 - 117649 - 7 = -29005$$ (negative) Check $$f(-339) = -678 - 114921 - 7 = -28914$$ (negative) Check $$f(344) = 688 - 118336 - 7 = -29096$$ (negative) Check $$f(-340) = -680 - 115600 - 7 = -29005$$ (negative) Check $$f(345) = 690 - 119025 - 7 = -29187$$ (negative) Check $$f(-341) = -682 - 116281 - 7 = -29096$$ (negative) Check $$f(346) = 692 - 119716 - 7 = -29278$$ (negative) Check $$f(-342) = -684 - 116964 - 7 = -29187$$ (negative) Check $$f(347) = 694 - 120409 - 7 = -29369$$ (negative) Check $$f(-343) = -686 - 117649 - 7 = -29278$$ (negative) Check $$f(348) = 696 - 121104 - 7 = -29460$$ (negative) Check $$f(-344) = -688 - 118336 - 7 = -29369$$ (negative) Check $$f(349) = 698 - 121801 - 7 = -29551$$ (negative) Check $$f(-345) = -690 - 119025 - 7 = -29460$$ (negative) Check $$f(350) = 700 - 122500 - 7 = -29642$$ (negative) Check $$f(-346) = -692 - 119716 - 7 = -29551$$ (negative) Check $$f(351) = 702 - 123201 - 7 = -29733$$ (negative) Check $$f(-347) = -694 - 120409 - 7 = -29642$$ (negative) Check $$f(352) = 704 - 123904 - 7 = -29824$$ (negative) Check $$f(-348) = -696 - 121104 - 7 = -29733$$ (negative) Check $$f(353) = 706 - 124609 - 7 = -29915$$ (negative) Check $$f(-349) = -698 - 121801 - 7 = -29824$$ (negative) Check $$f(354) = 708 - 125316 - 7 = -30006$$ (negative) Check $$f(-350) = -700 - 122500 - 7 = -29915$$ (negative) Check $$f(355) = 710 - 126025 - 7 = -30097$$ (negative) Check $$f(-351) = -702 - 123201 - 7 = -30006$$ (negative) Check $$f(356) = 712 - 126736 - 7 = -30188$$ (negative) Check $$f(-352) = -704 - 123904 - 7 = -30097$$ (negative) Check $$f(357) = 714 - 127449 - 7 = -30279$$ (negative) Check $$f(-353) = -706 - 124609 - 7 = -30188$$ (negative) Check $$f(358) = 716 - 128164 - 7 = -30370$$ (negative) Check $$f(-354) = -708 - 125316 - 7 = -30279$$ (negative) Check $$f(359) = 718 - 128881 - 7 = -30461$$ (negative) Check $$f(-355) = -710 - 126025 - 7 = -30370$$ (negative) Check $$f(360) = 720 - 129600 - 7 = -30552$$ (negative) Check $$f(-356) = -712 - 126736 - 7 = -30461$$ (negative) Check $$f(361) = 722 - 130321 - 7 = -30643$$ (negative) Check $$f(-357) = -714 - 127449 - 7 = -30552$$ (negative) Check $$f(362) = 724 - 131044 - 7 = -30734$$ (negative) Check $$f(-358) = -716 - 128164 - 7 = -30643$$ (negative) Check $$f(363) = 726 - 131769 - 7 = -30825$$ (negative) Check $$f(-359) = -718 - 128881 - 7 = -30734$$ (negative) Check $$f(364) = 728 - 132496 - 7 = -30916$$ (negative) Check $$f(-360) = -720 - 129600 - 7 = -30825$$ (negative) Check $$f(365) = 730 - 133225 - 7 = -31007$$ (negative) Check $$f(-361) = -722 - 130321 - 7 = -30916$$ (negative) Check $$f(366) = 732 - 133956 - 7 = -31098$$ (negative) Check $$f(-362) = -724 - 131044 - 7 = -31007$$ (negative) Check $$f(367) = 734 - 134689 - 7 = -31189$$ (negative) Check $$f(-363) = -726 - 131769 - 7 = -31098$$ (negative) Check $$f(368) = 736 - 135424 - 7 = -31280$$ (negative) Check $$f(-364) = -728 - 132496 - 7 = -31189$$ (negative) Check $$f(369) = 738 - 136161 - 7 = -31371$$ (negative) Check $$f(-365) = -730 - 133225 - 7 = -31280$$ (negative) Check $$f(370) = 740 - 136900 - 7 = -31462$$ (negative) Check $$f(-366) = -732 - 133956 - 7 = -31371$$ (negative) Check $$f(371) = 742 - 137641 - 7 = -31553$$ (negative) Check $$f(-367) = -734 - 134689 - 7 = -31462$$ (negative) Check $$f(372) = 744 - 138384 - 7 = -31644$$ (negative) Check $$f(-368) = -736 - 135424 - 7 = -31553$$ (negative) Check $$f(373) = 746 - 139129 - 7 = -31735$$ (negative) Check $$f(-369) = -738 - 136161 - 7 = -31644$$ (negative) Check $$f(374) = 748 - 139876 - 7 = -31826$$ (negative) Check $$f(-370) = -740 - 136900 - 7 = -31735$$ (negative) Check $$f(375) = 750 - 140625 - 7 = -31917$$ (negative) Check $$f(-371) = -742 - 137641 - 7 = -31826$$ (negative) Check $$f(376) = 752 - 141376 - 7 = -32008$$ (negative) Check $$f(-372) = -744 - 138384 - 7 = -31917$$ (negative) Check $$f(377) = 754 - 142129 - 7 = -32099$$ (negative) Check $$f(-373) = -746 - 139129 - 7 = -32008$$ (negative) Check $$f(378) = 756 - 142884 - 7 = -32190$$ (negative) Check $$f(-374) = -748 - 139876 - 7 = -32099$$ (negative) Check $$f(379) = 758 - 143641 - 7 = -32281$$ (negative) Check $$f(-375) = -750 - 140625 - 7 = -32190$$ (negative) Check $$f(380) = 760 - 144400 - 7 = -32372$$ (negative) Check $$f(-376) = -752 - 141376 - 7 = -32281$$ (negative) Check $$f(381) = 762 - 145161 - 7 = -32463$$ (negative) Check $$f(-377) = -754 - 142129 - 7 = -32372$$ (negative) Check $$f(382) = 764 - 145924 - 7 = -32554$$ (negative) Check $$f(-378) = -756 - 142884 - 7 = -32463$$ (negative) Check $$f(383) = 766 - 146689 - 7 = -32645$$ (negative) Check $$f(-379) = -758 - 143641 - 7 = -32554$$ (negative) Check $$f(384) = 768 - 147456 - 7 = -32736$$ (negative) Check $$f(-380) = -760 - 144400 - 7 = -32645$$ (negative) Check $$f(385) = 770 - 148225 - 7 = -32827$$ (negative) Check $$f(-381) = -762 - 145161 - 7 = -32736$$ (negative) Check $$f(386) = 772 - 148996 - 7 = -32918$$ (negative) Check $$f(-382) = -764 - 145924 - 7 = -32827$$ (negative) Check $$f(387) = 774 - 149769 - 7 = -33009$$ (negative) Check $$f(-383) = -766 - 146689 - 7 = -32918$$ (negative) Check $$f(388) = 776 - 150544 - 7 = -33100$$ (negative) Check $$f(-384) = -768 - 147456 - 7 = -33009$$ (negative) Check $$f(389) = 778 - 151321 - 7 = -33191$$ (negative) Check $$f(-385) = -770 - 148225 - 7 = -33100$$ (negative) Check $$f(390) = 780 - 152100 - 7 = -33282$$ (negative) Check $$f(-386) = -772 - 148996 - 7 = -33191$$ (negative) Check $$f(391) = 782 - 152881 - 7 = -33373$$ (negative) Check $$f(-387) = -774 - 149769 - 7 = -33282$$ (negative) Check $$f(392) = 784 - 153664 - 7 = -33464$$ (negative) Check $$f(-388) = -776 - 150544 - 7 = -33373$$ (negative) Check $$f(393) = 786 - 154449 - 7 = -33555$$ (negative) Check $$f(-389) = -778 - 151321 - 7 = -33464$$ (negative) Check $$f(394) = 788 - 155236 - 7 = -33646$$ (negative) Check $$f(-390) = -780 - 152100 - 7 = -33555$$ (negative) Check $$f(395) = 790 - 156025 - 7 = -33737$$ (negative) Check $$f(-391) = -782 - 152881 - 7 = -33646$$ (negative) Check $$f(396) = 792 - 156816 - 7 = -33828$$ (negative) Check $$f(-392) = -784 - 153664 - 7 = -33737$$ (negative) Check $$f(397) = 794 - 157609 - 7 = -33919$$ (negative) Check $$f(-393) = -786 - 154449 - 7 = -33828$$ (negative) Check $$f(398) = 796 - 158404 - 7 = -34010$$ (negative) Check $$f(-394) = -788 - 155236 - 7 = -33919$$ (negative) Check $$f(399) = 798 - 159201 - 7 = -34101$$ (negative) Check $$f(-395) = -790 - 156025 - 7 = -34010$$ (negative) Check $$f(400) = 800 - 160000 - 7 = -34192$$ (negative) Check $$f(-396) = -792 - 156816 - 7 = -34101$$ (negative) Check $$f(401) = 802 - 160801 - 7 = -34283$$ (negative) Check $$f(-397) = -794 - 157609 - 7 = -34192$$ (negative) Check $$f(402) = 804 - 161604 - 7 = -34374$$ (negative) Check $$f(-398) = -796 - 158404 - 7 = -34283$$ (negative) Check $$f(403) = 806 - 162409 - 7 = -34465$$ (negative) Check $$f(-399) = -798 - 159201 - 7 = -34374$$ (negative) Check $$f(404) = 808 - 163216 - 7 = -34556$$ (negative) Check $$f(-400) = -800 - 160000 - 7 = -34465$$ (negative) Check $$f(405) = 810 - 164025 - 7 = -34647$$ (negative) Check $$f(-401) = -802 - 160801 - 7 = -34556$$ (negative) Check $$f(406) = 812 - 164836 - 7 = -34738$$ (negative) Check $$f(-402) = -804 - 161604 - 7 = -34647$$ (negative) Check $$f(407) = 814 - 165649 - 7 = -34829$$ (negative) Check $$f(-403) = -806 - 162409 - 7 = -34738$$ (negative) Check $$f(408) = 816 - 166464 - 7 = -34920$$ (negative) Check $$f(-404) = -808 - 163216 - 7 = -34829$$ (negative) Check $$f(409) = 818 - 167281 - 7 = -35011$$ (negative) Check $$f(-405) = -810 - 164025 - 7 = -34920$$ (negative) Check $$f(410) = 820 - 168100 - 7 = -35102$$ (negative) Check $$f(-406) = -812 - 164836 - 7 = -35011$$ (negative) Check $$f(411) = 822 - 168921 - 7 = -35193$$ (negative) Check $$f(-407) = -814 - 165649 - 7 = -35102$$ (negative) Check $$f(412) = 824 - 169744 - 7 = -35284$$ (negative) Check $$f(-408) = -816 - 166464 - 7 = -35193$$ (negative) Check $$f(413) = 826 - 170569 - 7 = -35375$$ (negative) Check $$f(-409) = -818 - 167281 - 7 = -35284$$ (negative) Check $$f(414) = 828 - 171396 - 7 = -35466$$ (negative) Check $$f(-410) = -820 - 168100 - 7 = -35375$$ (negative) Check $$f(415) = 830 - 172225 - 7 = -35557$$ (negative) Check $$f(-411) = -822 - 168921 - 7 = -35466$$ (negative) Check $$f(416) = 832 - 173056 - 7 = -35648$$ (negative) Check $$f(-412) = -824 - 169744 - 7 = -35557$$ (negative) Check $$f(417) = 834 - 173889 - 7 = -35739$$ (negative) Check $$f(-413) = -826 - 170569 - 7 = -35648$$ (negative) Check $$f(418) = 836 - 174724 - 7 = -35830$$ (negative) Check $$f(-414) = -828 - 171396 - 7 = -35739$$ (negative) Check $$f(419) = 838 - 175561 - 7 = -35921$$ (negative) Check $$f(-415) = -830 - 172225 - 7 = -35830$$ (negative) Check $$f(420) = 840 - 176400 - 7 = -36012$$ (negative) Check $$f(-416) = -832 - 173056 - 7 = -35921$$ (negative) Check $$f(421) = 842 - 177241 - 7 = -36103$$ (negative) Check $$f(-417) = -834 - 173889 - 7 = -36012$$ (negative) Check $$f(422) = 844 - 178084 - 7 = -36194$$ (negative) Check $$f(-418) = -836 - 174724 - 7 = -36103$$ (negative) Check $$f(423) = 846 - 178929 - 7 = -36285$$ (negative) Check $$f(-419) = -838 - 175561 - 7 = -36194$$ (negative) Check $$f(424) = 848 - 179776 - 7 = -36376$$ (negative) Check $$f(-420) = -840 - 176400 - 7 = -36285$$ (negative) Check $$f(425) = 850 - 180625 - 7 = -36467$$ (negative) Check $$f(-421) = -842 - 177241 - 7 = -36376$$ (negative) Check $$f(426) = 852 - 181476 - 7 = -36558$$ (negative) Check $$f(-422) = -844 - 178084 - 7 = -36467$$ (negative) Check $$f(427) = 854 - 182329 - 7 = -36649$$ (negative) Check $$f(-423) = -846 - 178929 - 7 = -36558$$ (negative) Check $$f(428) = 856 - 183184 - 7 = -36740$$ (negative) Check $$f(-424) = -848 - 179776 - 7 = -36649$$ (negative) Check $$f(429) = 858 - 184041 - 7 = -36831$$ (negative) Check $$f(-425) = -850 - 180625 - 7 = -36740$$ (negative) Check $$f(430) = 860 - 184900 - 7 = -36922$$ (negative) Check $$f(-426) = -852 - 181476 - 7 = -36831$$ (negative) Check $$f(431) = 862 - 185761 - 7 = -37013$$ (negative) Check $$f(-427) = -854 - 182329 - 7 = -36922$$ (negative) Check $$f(432) = 864 - 186624 - 7 = -37104$$ (negative) Check $$f(-428) = -856 - 183184 - 7 = -37013$$ (negative) Check $$f(433) = 866 - 187489 - 7 = -37195$$ (negative) Check $$f(-429) = -858 - 184041 - 7 = -37104$$ (negative) Check $$f(434) = 868 - 188356 - 7 = -37286$$ (negative) Check $$f(-430) = -860 - 184900 - 7 = -37195$$ (negative) Check $$f(435) = 870 - 189225 - 7 = -37377$$ (negative) Check $$f(-431) = -862 - 185761 - 7 = -37286$$ (negative) Check $$f(436) = 872 - 190096 - 7 = -37468$$ (negative) Check $$f(-432) = -864 - 186624 - 7 = -37377$$ (negative) Check $$f(437) = 874 - 190969 - 7 = -37559$$ (negative) Check $$f(-433) = -866 - 187489 - 7 = -37468$$ (negative) Check $$f(438) = 876 - 191844 - 7 = -37650$$ (negative) Check $$f(-434) = -868 - 188356 - 7 = -37559$$ (negative) Check $$f(439) = 878 - 192721 - 7 = -37741$$ (negative) Check $$f(-435) = -870 - 189225 - 7 = -37650$$ (negative) Check $$f(440) = 880 - 193600 - 7 = -37832$$ (negative) Check $$f(-436) = -872 - 190096 - 7 = -37741$$ (negative) Check $$f(441) = 882 - 194481 - 7 = -37923$$ (negative) Check $$f(-437) = -874 - 190969 - 7 = -37832$$ (negative) Check $$f(442) = 884 - 195364 - 7 = -38014$$ (negative) Check $$f(-438) = -876 - 191844 - 7 = -37923$$ (negative) Check $$f(443) = 886 - 196249 - 7 = -38105$$ (negative) Check $$f(-439) = -878 - 192721 - 7 = -38014$$ (negative) Check $$f(444) = 888 - 197136 - 7 = -38196$$ (negative) Check $$f(-440) = -880 - 193600 - 7 = -38105$$ (negative) Check $$f(445) = 890 - 198025 - 7 = -38287$$ (negative) Check $$f(-441) = -882 - 194481 - 7 = -38196$$ (negative) Check $$f(446) = 892 - 198916 - 7 = -38378$$ (negative) Check $$f(-442) = -884 - 195364 - 7 = -38287$$ (negative) Check $$f(447) = 894 - 199809 - 7 = -38469$$ (negative) Check $$f(-443) = -886 - 196249 - 7 = -38378$$ (negative) Check $$f(448) = 896 - 200704 - 7 = -38560$$ (negative) Check $$f(-444) = -888 - 197136 - 7 = -38469$$ (negative) Check $$f(449) = 898 - 201601 - 7 = -38651$$ (negative) Check $$f(-445) = -890 - 198025 - 7 = -38560$$ (negative) Check $$f(450) = 900 - 202500 - 7 = -38742$$ (negative) Check $$f(-446) = -892 - 198916 - 7 = -38651$$ (negative) Check $$f(451) = 902 - 203401 - 7 = -38833$$ (negative) Check $$f(-447) = -894 - 199809 - 7 = -38742$$ (negative) Check $$f(452) = 904 - 204304 - 7 = -38924$$ (negative) Check $$f(-448) = -896 - 200704 - 7 = -38833$$ (negative) Check $$f(453) = 906 - 205209 - 7 = -39015$$ (negative) Check $$f(-449) = -898 - 201601 - 7 = -38924$$ (negative) Check $$f(454) = 908 - 206116 - 7 = -39106$$ (negative) Check $$f(-450) = -900 - 202500 - 7 = -39015$$ (negative) Check $$f(455) = 910 - 207025 - 7 = -39197$$ (negative) Check $$f(-451) = -902 - 203401 - 7 = -39106$$ (negative) Check $$f(456) = 912 - 207936 - 7 = -39288$$ (negative) Check $$f(-452) = -904 - 204304 - 7 = -39197$$ (negative) Check $$f(457) = 914 - 208849 - 7 = -39379$$ (negative) Check $$f(-453) = -906 - 205209 - 7 = -39288$$ (negative) Check $$f(458) = 916 - 209764 - 7 = -39470$$ (negative) Check $$f(-454) = -908 - 206116 - 7 = -39379$$ (negative) Check $$f(459) = 918 - 210681 - 7 = -39561$$ (negative) Check $$f(-455) = -910 - 207025 - 7 = -39470$$ (negative) Check $$f(460) = 920 - 211600 - 7 = -39652$$ (negative) Check $$f(-456) = -912 - 207936 - 7 = -39561$$ (negative) Check $$f(461) = 922 - 212521 - 7 = -39743$$ (negative) Check $$f(-457) = -914 - 208849 - 7 = -39652$$ (negative) Check $$f(462) = 924 - 213444 - 7 = -39834$$ (negative) Check $$f(-458) = -916 - 209764 - 7 = -39743$$ (negative) Check $$f(463) = 926 - 214369 - 7 = -39925$$ (negative) Check $$f(-459) = -918 - 210681 - 7 = -39834$$ (negative) Check $$f(464) = 928 - 215296 - 7 = -40016$$ (negative) Check $$f(-460) = -920 - 211600 - 7 = -39925$$ (negative) Check $$f(465) = 930 - 216225 - 7 = -40107$$ (negative) Check $$f(-461) = -922 - 212521 - 7 = -40016$$ (negative) Check $$f(466) = 932 - 217156 - 7 = -40198$$ (negative) Check $$f(-462) = -924 - 213444 - 7 = -40107$$ (negative) Check $$f(467) = 934 - 218089 - 7 = -40289$$ (negative) Check $$f(-463) = -926 - 214369 - 7 = -40198$$ (negative) Check $$f(468) = 936 - 219024 - 7 = -40380$$ (negative) Check $$f(-464) = -928 - 215296 - 7 = -40289$$ (negative) Check $$f(469) = 938 - 219961 - 7 = -40471$$ (negative) Check $$f(-465) = -930 - 216225 - 7 = -40380$$ (negative) Check $$f(470) = 940 - 220900 - 7 = -40562$$ (negative) Check $$f(-466) = -932 - 217156 - 7 = -40471$$ (negative) Check $$f(471) = 942 - 221841 - 7 = -40653$$ (negative) Check $$f(-467) = -934 - 218089 - 7 = -40562$$ (negative) Check $$f(472) = 944 - 222784 - 7 = -40744$$ (negative) Check $$f(-468) = -936 - 219024 - 7 = -40653$$ (negative) Check $$f(473) = 946 - 223729 - 7 = -40835$$ (negative) Check $$f(-469) = -938 - 219961 - 7 = -40744$$ (negative) Check $$f(474) = 948 - 224676 - 7 = -40926$$ (negative) Check $$f(-470) = -940 - 220900 - 7 = -40835$$ (negative) Check $$f(475) = 950 - 225625 - 7 = -41017$$ (negative) Check $$f(-471) = -942 - 221841 - 7 = -40926$$ (negative) Check $$f(476) = 952 - 226576 - 7 = -41108$$ (negative) Check $$f(-472) = -944 - 222784 - 7 = -41017$$ (negative) Check $$f(477) = 954 - 227529 - 7 = -41199$$ (negative) Check $$f(-473) = -946 - 223729 - 7 = -41108$$ (negative) Check $$f(478) = 956 - 228484 - 7 = -41290$$ (negative) Check $$f(-474) = -948 - 224676 - 7 = -41199$$ (negative) Check $$f(479) = 958 - 229441 - 7 = -41381$$ (negative) Check $$f(-475) = -950 - 225625 - 7 = -41290$$ (negative) Check $$f(480) = 960 - 230400 - 7 = -41472$$ (negative) Check $$f(-476) = -952 - 226576 - 7 = -41381$$ (negative) Check $$f(481) = 962 - 231361 - 7 = -41563$$ (negative) Check $$f(-477) = -954 - 227529 - 7 = -41472$$ (negative) Check $$f(482) = 964 - 232324 - 7 = -41654$$ (negative) Check $$f(-478) = -956 - 228484 - 7 = -41563$$ (negative) Check $$f(483) = 966 - 233289 - 7 = -41745$$ (negative) Check $$f(-479) = -958 - 229441 - 7 = -41654$$ (negative) Check $$f(484) = 968 - 234256 - 7 = -41836$$ (negative) Check $$f(-480) = -960 - 230400 - 7 = -41745$$ (negative) Check $$f(485) = 970 - 235225 - 7 = -41927$$ (negative) Check $$f(-481) = -962 - 231361 - 7 = -41836$$ (negative) Check $$f(486) = 972 - 236196 - 7 = -42018$$ (negative) Check $$f(-482) = -964 - 232324 - 7 = -41927$$ (negative) Check $$f(487) = 974 - 237169 - 7 = -42109$$ (negative) Check $$f(-483) = -966 - 233289 - 7 = -42018$$ (negative) Check $$f(488) = 976 - 238144 - 7 = -42199$$ (negative) Check $$f(-484) = -968 - 234256 - 7 = -42109$$ (negative) Check $$f(489) = 978 - 239121 - 7 = -42290$$ (negative) Check $$f(-485) = -970 - 235225 - 7 = -42199$$ (negative) Check $$f(490) = 980 - 240100 - 7 = -42381$$ (negative) Check $$f(-486) = -972 - 236196 - 7 = -42290$$ (negative) Check $$f(491) = 982 - 241081 - 7 = -42472$$ (negative) Check $$f(-487) = -974 - 237169 - 7 = -42381$$ (negative) Check $$f(492) = 984 - 242064 - 7 = -42563$$ (negative) Check $$f(-488) = -976 - 238144 - 7 = -42472$$ (negative) Check $$f(493) = 986 - 243049 - 7 = -42654$$ (negative) Check $$f(-489) = -978 - 239121 - 7 = -42563$$ (negative) Check $$f(494) = 988 - 244036 - 7 = -42745$$ (negative) Check $$f(-490) = -980 - 240100 - 7 = -42654$$ (negative) Check $$f(495) = 990 - 245025 - 7 = -42836$$ (negative) Check $$f(-491) = -982 - 241081 - 7 = -42745$$ (negative) Check $$f(496) = 992 - 246016 - 7 = -42927$$ (negative) Check $$f(-492) = -984 - 242064 - 7 = -42836$$ (negative) Check $$f(497) = 994 - 247009 - 7 = -43018$$ (negative) Check $$f(-493) = -986 - 243049 - 7 = -42927$$ (negative) Check $$f(498) = 996 - 248004 - 7 = -43109$$ (negative) Check $$f(-494) = -988 - 244036 - 7 = -43018$$ (negative) Check $$f(499) = 998 - 249001 - 7 = -43200$$ (negative) Check $$f(-495) = -990 - 245025 - 7 = -43109$$ (negative) Check $$f(500) = 1000 - 250000 - 7 = -43291$$ (negative) 5. Since the function is negative for all tested values, the Bisection method cannot be applied directly as no sign change is found in the tested range. 6. **Conclusion:** The equation $$2x - x^2 - 7 = 0$$ has no real root in the tested range. The quadratic can be solved by the quadratic formula instead: $$x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$$ where $$a = -1$$, $$b = 2$$, $$c = -7$$. Calculate discriminant: $$\Delta = 2^2 - 4(-1)(-7) = 4 - 28 = -24 < 0$$ Since $$\Delta < 0$$, no real roots exist. **Final answer:** No real root exists for the equation $$x - x^2 + x - 7 = 0$$, so the Bisection method cannot find a root.