Question

Factorise.. 25a sq. - 9b sq. please tell the answer​

Answer 1

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

Explanation:

Given,

`{25a}^(2) - {9b}^(2)`

`= {(5a)}^(2) - {(3b)}^(2)`

Since,

`{x}^(2) - {y}^(2) = (x + y)(x - y)`

Then,

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