I am not sure what this type of equation is called, but anyway this is the formula
(3x+2y)^2 – (x-y)^2
4x + 6y
And the answer is =2x + y/2
So i know i have to factor out the numerator but for the life of me i cannot see how they come up with that answer, can anyone please explain how this works?
Much appreciated.
p.s what this type of equation called?