Question

How to factorize 81b2 - 25

Answer 1

81b2- 25

= (9b)2- (5)2

= (9b+5) ( 9b-5)

hope it helps you.

Answer 2

Answer:

Step-by-step explanation:

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

So,

81b^2-25

= (9b)^2 - (5)^2

= (9b+5) (9b-5)

HOPE IT WILL HELP U