Question

9a²b² - 25 (by formula)​

Answer 1

Answer:

(3ab+5) (3ab-5)

Step-by-step explanation:

we have

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

here

a= 9a^2b^2 and b=25

so

(3ab)^2 -(5)^2

=(3ab+5) (3ab-5)