Question

Find the sum

(2x^3-x-9)+(7x^2-5x-2)
A) 9x^2-6x-11
B)2x^3+7x^2-4x-11

C) 2x^3+7x^2-6x-7
D)2x^3+7x^2-6x-11

Answer 1

D)2x^3+7x^2-6x-11

Explanation:

(2x^3-x-9)+(7x^2-5x-2) and simplify

into 2x^3+7x^2-6x-11 (steps shown in attachment)