Question

Factor completely
x^3+27

Answer 1

(x + 3)(x² - 3x + 9)

Explanation:

Cube Factor: (x + d)(ax² - bx + c)

Cube Factor: (x - d)(ax² + bx + c)

We take the cube root of both x³ and 27:

(x + 3)

We then know we will be using + first and - second.

(x + 3)(x² - 3x + 9)