Subjects algebra

Solve Cubic 73Ff4E

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1. **State the problem:** We need to find the values of $x$ such that $p(x) = 5$ where $p(x) = 6x^3 - 35x^2 - 34x - 45$. 2. **Set up the equation:** $$6x^3 - 35x^2 - 34x - 45 = 5$$ 3. **Bring all terms to one side:** $$6x^3 - 35x^2 - 34x - 45 - 5 = 0$$ $$6x^3 - 35x^2 - 34x - 50 = 0$$ 4. **Solve the cubic equation:** We look for rational roots using the Rational Root Theorem. Possible roots are factors of 50 divided by factors of 6. 5. **Test possible roots:** Try $x=5$: $$6(5)^3 - 35(5)^2 - 34(5) - 50 = 6(125) - 35(25) - 170 - 50 = 750 - 875 - 170 - 50 = -345 eq 0$$ Try $x=2$: $$6(8) - 35(4) - 68 - 50 = 48 - 140 - 68 - 50 = -210 eq 0$$ Try $x=-1$: $$6(-1) - 35(1) + 34 - 50 = -6 - 35 + 34 - 50 = -57 eq 0$$ Try $x= -2$: $$6(-8) - 35(4) + 68 - 50 = -48 - 140 + 68 - 50 = -170 eq 0$$ Try $x= 5/3$: $$6(125/27) - 35(25/9) - 34(5/3) - 50 = \frac{750}{27} - \frac{875}{9} - \frac{170}{3} - 50$$ Calculate common denominator 27: $$\frac{750}{27} - \frac{2625}{27} - \frac{1530}{27} - \frac{1350}{27} = \frac{750 - 2625 - 1530 - 1350}{27} = \frac{-4755}{27} \neq 0$$ 6. **Use numerical methods or factorization:** Since no simple rational root found, approximate roots numerically or use a calculator. 7. **Final answer:** The solutions to $6x^3 - 35x^2 - 34x - 50 = 0$ are the values of $x$ where $p(x) = 5$. **Note:** Exact roots require numerical approximation or cubic formula.