I need to simplify (49c^6)^(-5/2) down to 1/(343c^9) but I'm not sure how to do this. The same goes for (27a^3b^3)^(2/3). I find it much easier to simplify when they are in the form of x^a/n. Now, with all the new letters, i'm sort of confused. Any tips would be appreciated... thank you!