Question

factorise the following using in square minus b square is equals to( a - b) (a + b) (a) 4a square-9b square​

Answer 1

Answer:

4a square-9b square

Step-by-step explanation:

4(a+b)-9

(4-9) (a+b)

Answer 2

Answer: (2a+3b) (2a-3b)

Step-by-step explanation:

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

So,

4a^2-9b^2 = (2a)^2- (3b)^2

= (2a+3b) (2a-3b)