Question

Factorize the following using identities:
(i) 9a² - 25b²​

Answer 1

$9 {a}^{2} - 25 {b}^{2} \\ = > {(3a)}^{2} - {(5b)}^{2} \\ = > (3a +5 b)(3a - 5b)$

Answer 2

Answer:

a^2 - b^2 = ( a+b ) (a-b)

=(3a+5b) (3a-5b)