Question

How do you factor completely: `16x^2 – 9`?

Answer 1

`16x^2-9=(4x+3)(4x-3)`

Explanation:

`16x^2-9`

This is an example of the difference of squares, in which `a^2-b^2=(a+b)(a-b)`.

`a=4x,` `b=3`

`16x^2-9=(4x+3)(4x-3)`