# Math Help - simplify polynomial

1. ## simplify polynomial

hello how would i simplify this fraction

$\frac {(x^4-y^4)}{(x-y)}$

2. Originally Posted by sigma1
hello how would i simplify this fraction

$\frac {(x^4-y^4)}{(x-y)}$
Start by noting that $x^4 - y^4 = (x^2)^2 - (y^2)^2 = (x^2 - y^2)(x^2 + y^2) = ....$

3. ok now that i have seen that would you proceed to do some cancellation to get rid of the denominator? can u show me by demonstration with this example?

4. Originally Posted by sigma1
ok now that i have seen that would you proceed to do some cancellation to get rid of the denominator? can u show me by demonstration with this example?
I'm expecting you to finish the factorising I started and then do the cancelling yourself ....