I just need help with one problem on my homework...

Both the directions are to simplify

First one:

Fifth root of x cubed all over Seventh root of x to the 4th

I didnt know how to do that one at all...

Second one

(Fourth root of x cubed times Fourth root of x to the fifth) with a -2 exponent outside of the paranthesis

For that one, my answer was 1 over square root of x to the 8th.

Thanks so much to anyone who responds.... any help would be appreciated, let me know if anything needs to be further/more clearly explained.