Question

factorise 12(a+5b)^2 - 9(a+5b)​

Answer 1

Answer:

3(a+5b) [4(a+5b) - 3 ]

Step-by-step explanation:

Here we have to factorize 12(a+5b)^2 - 9(a+5b)​.

We can see that the term  (a+5b) is common in both terms.

Now by taking it common we have,

⇒12(a+5b)^2 - 9(a+5b)​

⇒(a+5b) [ 12(a+5b) - 9 ]

Again taking 3 as common we have,

⇒3(a+5b) [4(a+5b) - 3 ]

This is the required answer.