Question

Factorise algebraic expression : 81p²- 121q² ​

Answer 1

(9p+11q) (9p-11q)

Hope it will helps you ✌️

Answer 2

81p²- 121q² ​

[a²-b² = (a+b)(a-b)]

here a = 9p , b= 11q

(9p+11q)(9p-11q)