4a^2-9(x+y)^2 factories this step by step pls. Anyone !! Help me pls!!

Question

asked Mar 19, 2021 13.2k views

1 Answer

Piotr Szybicki · Answer 1 · 2021-03-25T15:18:45+0000

(2a - 3x - 3y)(2a + 3x + 3y)

Hi there !

use formula

a² - b² = (a - b)(a + b)

a = 2a

b = 3(x + y)

4a² - 9(x+y)² =

= [2a - 3(x + y)][2a + 3(x + y)]

= (2a - 3x - 3y)(2a + 3x + 3y)

Good luck !