How do we turn this into exponential form?

cubert[125 q^9 s^15]

Any tips on solving problems like these? Thank you so much for the help :)

I will assume that "cubert" means cube root.

cubert[125 q^9 s^15]
= [125 q^9 s^15] ^(1/3)
= 5 q^3 s^5

(take the cube root of each of the factors)