Question

(a) 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 ____________. (b) Complete the factoring by grouping. 5x2 − 16x − 16 = 5x2 − 20x + ________− 16 = (5x2 − 20x) + (________ ) = 5x(________ ) + __________(x − 4) = ____________