Question

Factorise:
(a^2 - 1) (b^2 -1) + 4ab






PLEASE HELP ME.​

Answer 1

this is your answer

hope it will help you ✔✔

Answer 2

Answer:

(a²-1²)(b²-1²) +4ab

=(a+1)(a-1)(b+1)(b-1) +4ab

(since,(a²-b²)=(a+b)(a-b))

Hope it helps u....^_^