Question

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

Answer 1

Answer:

Here is your Answer,

By Using identity ,

a²-b²= ( a+b)(a-b)

Given , = 20a²-45b²

It can be written as ,

= (2√5a)²-(3√5b)²

Here a= (2√5a)

b= (3√5b)

= (2√5a - 3√5b)(2√5a +3√5b)

Hope this helps you....✌^_^

Step-by-step explanation:

Answer 2

ANSWER:

(5√5a+3√5b)(5√5a-3√5b)