Question

(2xsqared+6x+7)+(-7x to the third power +4x+5)

Answer 1

ANSWER:

$-7x^3+2x^2+10x+12$

STEP-BY-STEP EXPLANATION:

We have the following expression

$\mleft(2x^2+6x+7\mright)+\mleft(-7x^3+4x+5\mright)​$

We carry out the operation and we have:

$2x^2+6x+7-7x^3\: +4x+5​=-7x^3+2x^2+(6x+4x)+(7+5)=-7x^3+2x^2+10x+12$