Question

How do you factor `4x^2 + 12x - 64`?

Answer 1

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

Explanation:

`f(x) = 4y = 4(x^2 + 3x - 16)`
Factor y.
`D = b^2 - 4ac = 9 + 64 = 73`
Since D is not a perfect square, there for, y can't be factored.
Answer:
`f(x) = 4(x^2 + 3x - 16)`