Question

factorise 4x square -9y square​

Answer 1

hope this helps u

4x²-9y²

we can write 4 = 2*2* = 2² like that 9 = 3*3 = 3²

so

2²x²-3²y²

(2x)²-(3y)²

which is in the form of  

a²-b² = (a+b)(a-b)

(2x)²-(3y)²  =  (2x+3y)(2x-3y)

Answer 2

Step-by-step explanation:

identity used

a²-b²=(a+b)(a-b)