Question

Find an expression which represents the difference when (-5x-y)(−5x−y) is subtracted from (9x+2y)(9x+2y) in simplest terms.

Answer 1

55x=75y

Explanation:

11x x 5x=55x

25y x 3y=75y

Answer 2

56x² + 2xy+ 3y²

Explanation:

81x²+18xy+18xy+4y² - (25x²+10xy+y²) = 56x² + 2xy+ 3y²