Question

What is the factored form of x3 + 216?

A.
(x − 6)(x2 + 6x + 36)
B.
(x + 6)(x2 − 6x + 36)
C.
(x + 6)(x2 − 12x + 36)
D.
(x + 6)(x2 + 12x + 36)

Answer 1

Hi there I’m gonna show how to do this problem first oh never mind it’s A)

Answer 2

The answer is letter B.

Solution:

(x+6)(x2−6x+36)

=(x+6)(x2+−6x+36)

=(x)(x2)+(x)(−6x)+(x)(36)+(6)(x2)+(6)(−6x)+(6)(36)

=x³−6x2+36x+6x2−36x+216

=x³+216