Hey guys.

I know that x^-2 is equal to 1/x^2

But, this problem looks like this. It asks me to simplify this (AKA get rid of the negative exponents):

((x^-1)+(y^-1))/((x^-2)-(y^-2))

For some reason I don't think I can just flip the problem around to make it look like this

((x^2)-(y^2))/((x^1)+(y^1))

But if I can, can you let me know why? Thanks guys!