Question

U^-3=1/125
U=?
@GretaKnows

Answer 1

hint:
5^3=125

Answer 2

one more hint:
\[\frac{1}{a^n}=a^{-n}\]

Answer 3

Im sorry but im lost??=/

Answer 4

here is an example:
\[u^{-3}=\frac{1}{8} \\ u^{-3}=\frac{1}{2^3} \\ u^{-3}=2^{-3} \\ u=2\]

Answer 5

Ok thanks I got 5?

Answer 6

sounds great