Question

what is the simplified form of this expression? (-3x^2 + x + 5) - (4x^2 - 2x)
a. -7x^2 + 3x + 5
b. 7x^2 + 3x - 5
c. x^2 - x + 5
d. -x^2 + 3x - 11

Explanation:

Step1: Remove parentheses

$(-3x^{2}+x + 5)-(4x^{2}-2x)=-3x^{2}+x + 5-4x^{2}+2x$

Step2: Combine like - terms

$(-3x^{2}-4x^{2})+(x + 2x)+5=-7x^{2}+3x + 5$

Answer:

A. $-7x^{2}+3x + 5$