Question

Factorise
4a² -9
give steps by step explation​

Answer 1

Step-by-step explanation:

try it hope it helps you in urgent need.

Answer 2

Answer:

4a^2-9

= (2a)^2 -(3)^2

= (2a+3) (2a-3)...(ANS.)

[ Since, a^2-b^2 = (a+b) (a-b) ]