(xy-y^2)/(x-y)
(xy-y^2)/(x-y) factor a "y" out of the numerator ..... and we have
[y (x - y)] / [x - y ] "cancel" the (x - y) terms on top and bottom
And we're left with "y"
I know the answer is y, but how do i go forward to solve it
Thx CPhill, i understand now<33 I've never thought of it that way :D