Question

Factorise this question using suitable identities= 63p²q2-7​

Answer 1

Given that, 63p²q²-7​

=7(9p²q²-1)

We know that,(a+b)(a-b) = a² - b²

So,

7{ (3pq)²-(1) }

=7(3pq+1)(3pq-1)Ans.