Question

What is the completely factored form of x3 – 64x?

Answer 1

C

Explanation:

on edge 2020

Answer 2

x³ - 64x

by factoring out the x
x³ - 64x = x(x² - 64)

by factorizing the bracket
x³ - 64x = x(x² - 8x + 8x -64)
= x (x - 8) + 8 (x - 8)
= x (x + 8) (x - 8)

∴ x³ - 64x = x (x + 8) (x - 8)