Question

Factorise fully 2x^2-4xy

Answer 1

The answer is 2x(x-2y)

Answer 2

x^2=x*x
undistribute propoerty
ab-ac=a(b-c)
find a aka common factor

2x^2=2*x*x
4xy=2*2*x*y
common is 2*x=2x

a=2x
2x(x)-2x(2y)=2x(x-2y)