Question

Find of the value of x.(5x-22)(4x+4)

Answer 1

20x^2 -68x-88

Explanation:

(5x-22)(4x+4)

FOIL

first 5x*4x= 20x^2

outer 5x*4 = 20x

inner -22*4x = -88x

last -22*4 = -88

Add these together

20x^2 +20x-88x-88 =

20x^2 -68x-88