OK, I'm baaack!

Need help on the following problems and they need to be simplified:

1. -x^2y^2/x^1/2y^0=?

2. cubed root of "a" multplied by fifth root of "a"=??

And is this right???: cubed root of X^5y^5= (x^5y^5)^1/3=x^5/3y^5/3=(xy)^5/3

Thanks for your excellent help