Question

Factor completely: x^3 -16x

I'll appreciate the Help!!!

Answer 1

First, we can factor an x out of this.

We're left with x(x^2 - 16)

We can use the difference of squares theorem here to factor this further.

`a^2 - b^2 = (a - b)(a + b)`

We're left with (x)(x + 4)(x - 4)