First, we need to notice that the polynomial can be written as the difference of two perfect squares. 4x2 − y2 = (2x)2 −y2 Now we can apply above formula with a = 2x and b = y (2x)2 −y2

Multiply the single term x by each term of the polynomial ) 5 by each term of the polynomial 2 10 15 5 18x -10x 10x 12x^2+8x-15 2x2 +8x−15 Final Answer 12x^2+8x-15 12x2 +8x−15