Question

how to solve this question​

Answer 1

Answer:

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

$9 {a}^{2} {b}^{2} - 25$

$(9ab + 5)(9ab - 5)$

Step-by-step explanation:

Hope it helps you out........

Answer 2

Step-by-step explanation:

now write it as

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

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

(3ab+5)(3ab-5)=0

(3ab+5)=0. (3ab-5)=0

3ab=-5 3ab=5

ab=-5/3. ab=5/3

hope it helps