question\nperform the operation.\n$(8x^{2}+3x - 4)+(-2x^{2}+8x)$

Explanation:

Step1: Remove parentheses

Since there is a plus sign before each parenthesis, the terms remain the same. $8x^{2}+3x - 4-2x^{2}+8x$

Step2: Combine like - terms

Combine the $x^{2}$ terms: $8x^{2}-2x^{2}=(8 - 2)x^{2}=6x^{2}$. Combine the $x$ terms: $3x+8x=(3 + 8)x = 11x$. The constant term is $-4$. $6x^{2}+11x - 4$

Answer:

$6x^{2}+11x - 4$