Simplify the expression where possible.

Question

(r^-3 s^2 t)^4

I cannot figure this one out. Thanks

Answer 1

I guess remove the outside power, giving
r^-12 s^8 t^4
Not sure that's any simpler. Or maybe they want only positive powers?

s^8 t^4/r^12

I suggest you look at similar examples in your text, to see what they did there.