Question

How do you factor `9x ^ { 4} - 16`?

Answer 1

`(3x^2+4)(3x^2-4)`

Explanation:

This expression is in the form `a^2-b^2`, which can be factored as `(a+b)(a-b)`.

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