Question

(-8x² + 5x + 3) + (6x + 6)

Explanation:

Step1: Remove parentheses

Since we are adding two polynomials, we can remove the parentheses directly: $-8x^{2}+5x + 3+6x + 6$

Step2: Combine like terms

For the $x$ terms: $5x+6x = 11x$; for the constant terms: $3 + 6=9$. The $x^{2}$ term remains as it is. So we get $-8x^{2}+11x + 9$

Answer:

$-8x^{2}+11x + 9$