Question

FACTORISE :-
9a2-24ab+8bc+15b2-16c2​

Answer 1

Step-by-step explanation:

We need to know algebraic identity first.

(a - b)² = a² - 2ab + b²

Solution :

Now, 9a² - 24ab + 16b²

= (3a) ² - (2 * 3a * 4b) + (4b) ²

= (3a - 4b) ²

= (3a - 4b) (3a - 4b)

Which is the required factorization.