Question

Describe the steps you would use to factor

2x3 + 5x2 – 8x – 20 completely. Then state the factored form.

Answer 1

Since both terms are perfect squares, factor using the difference of square formula, a2 - b2 = (a+b) (a-b) where a = x and b = 2
(2x + 5) (x + 2) (x + 2)