question\nperform the operation.\n(-7x^2 + 3x - 10) + (-6x^2 - 10x + 3)

Explanation:

Step1: Remove parentheses

$-7x^{2}+3x - 10-6x^{2}-10x + 3$

Step2: Combine like - terms of $x^{2}$

$(-7x^{2}-6x^{2})+(3x-10x)+(-10 + 3)$ $=-13x^{2}+(3x-10x)+(-10 + 3)$

Step3: Combine like - terms of $x$

$=-13x^{2}-7x+(-10 + 3)$

Step4: Combine constant terms

$=-13x^{2}-7x - 7$

Answer:

$-13x^{2}-7x - 7$