Answer: A.
Step by step explanation:
(3m/n)^4
(3m)^4 / (n)^4
(81m^4)/(n^4).
Whenever I encounter a problem whose properties I do not remember, I simply look back at simple numbers. For example:
(2/3)^2
If I didn’t remember the property, I would try it out with an easy fraction that we can solve.
(2/3)^2 = 4/9
(2/3)^2 = (2^2)/(3^2) = 4/9
Always remember the properties of exponents!
