Question

Which products result in a difference of squares? Check all that apply.

(5z + 3)(-52 -3)
(w - 2.5)(w +2.5)
(8g + 1)(8g +1)
(40 - 9)(-4v +9)
(6y + 7)(7y - 6)
(p-5)(-5)​

Answer 1

B

Explanation:

(w-2.5)(w+2.5)=w(w+2.5)-2.5(w+2.5)

=w²+2.5w-2.5w-2.5²

=w²-2.5²