difference of squares
a^2 - b^2 = (a + b)(a - b)
81z^2 - 49y^2
= (9z)^2 - (7y)^2
= (9z + 7y)(9z - 7y)
Copyright © 2024 1QUIZZ.COM - All rights reserved.
Answers & Comments
Verified answer
difference of squares
a^2 - b^2 = (a + b)(a - b)
81z^2 - 49y^2
= (9z)^2 - (7y)^2
= (9z + 7y)(9z - 7y)