Find the product. (7a + 8b)(7a - 8b)

Holt McDougal Larson Algebra 1 Common Core Edition page 514 number 26

Asked by Dee Dee on 13 Mar 12:27

Last updated by anonymous on 14 Mar 14:50

Answered by arwen46 on 14 Mar 14:50

(7a + 8b)(7a - 8b) =
7a (7a - 8b) + 8b(7a - 8b) =
49a² - 56 ab + 56ab - 64b² =
49a² - 64b²