Question

To factor 5x2 − 16x − 16 by grouping, first find two integers whose product is 5(−16) =___________and whose sum is the coefficient of the middle term,_____________These two integers, in increasing order, are_____________ and ___________.

Complete the factoring by grouping.
5x2 − 16x − 16 = 5x2 − 20x +_______ − 16= (5x2 − 20x) + ( )
= 5x( ) + __________(x − 4)
=___________