Question

Factorise each of the following: 125a² – 45b² using identites​

Answer 1

Step-by-step explanation:

therefore , answer = ( 125a - 45a ) ( 125a + 45a )

Answer 2

Question number 29:-

$125 {a}^{2} - 45 {b}^{2}$

$= 5(25 {a}^{2} - 9 {b}^{2} )$

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

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