Question

factorise x square minus 4y square​

Answer 1

Step-by-step explanation:

Given expression is x²-4y²

It can be written as x²-2²y²

=>x²-(2y)²

we know that a²-b²=(a+b)(a-b)

here, a=x and b=2y

=>(x+2y)(x-2y)

x²-4y²=(x+2y)(x-2y)