Question

Factorise 121r² - 144s²​

Answer 1

Answer:

(11r+12s)(11r-12s)

Step-by-step explanation:

by using a²-b² = (a+b)(a-b) identity

Answer 2

Answer:

(11r+12s)(11r-12s)

Step-by-step explanation:

First Breakdown

11r² - 12s²

Now use identity a² - b² = (a+b)(a-b)

(11r+12s)(11r-12s)