Question

factorise 9x^2- 121y^2​

Answer 1

Answer: Here is your answer.

Step-by-step explanation:

Rewrite 9x^2 as (3x^2), similarly 121y^2 as (11y)^2

So, (3x)^2-(11y)^2

So, a^2-b^2= (a+b) (a-b)

So, (3x+11y) (3x-11y):- This is your answer.

In this question :-

1. First we have to identify that whose square is equal to 9 and whose square is equal to 121.

2. Second we have to put expression according to question.

3. Third we have to think about appropriate identity from which can get the answer.

4. Fourth you get your answer.

And if the expression is further divisible or we can make it in simpler form so we have to make it in simpler form but, the expression is not further divisible or we can't make in simpler form so level that expression in that form.

Hope this is helpful to you.

    Thank you.