2009-05-19, 10:34 PM
Fiel Wrote:In (x*y*-1) there is no distribution taking place.
Think about it this way:
x^2 - x(x - y) = ???
Let's rearrange this.
-x(x - y) + x^2 = ???
-x^2 + xy + x^2 = ???
Simplify:
xy = ???
x =
y =
*
= ???
which was the original question
Woops, I thought you were just translating the smilies into x and y...not going from step 1 to step 2.
Yeah you're right
.