Subjects algebra

Polynomial Subtraction C773A5

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1. **State the problem:** We need to subtract the polynomial \( (5k^2 - 3) \) from \( (-2k + 4k^2 + 6) \). 2. **Write the expression:** $$ (-2k + 4k^2 + 6) - (5k^2 - 3) $$ 3. **Distribute the minus sign to the second polynomial:** $$ -2k + 4k^2 + 6 - 5k^2 + 3 $$ 4. **Combine like terms:** - For the \( k^2 \) terms: \(4k^2 - 5k^2 = \cancel{4k^2} - \cancel{5k^2} = -1k^2 = -k^2\) - For the \( k \) terms: \(-2k\) (no like term to combine) - For the constants: \(6 + 3 = 9\) 5. **Write the final polynomial in standard form (descending powers):** $$ -k^2 - 2k + 9 $$ **Answer:** \( -k^2 - 2k + 9 \)