question\nfind the sum of $2x^2 + 5x + 7$ and $-10x^2 - 7x + 1$.

Explanation:

Step1: Write the sum expression

$(2x^2 + 5x + 7) + (-10x^2 - 7x + 1)$

Step2: Combine like terms for $x^2$

$2x^2 - 10x^2 = -8x^2$

Step3: Combine like terms for $x$

$5x - 7x = -2x$

Step4: Combine constant terms

$7 + 1 = 8$

Step5: Combine all results

$-8x^2 - 2x + 8$

Answer:

$-8x^2 - 2x + 8$