Answer:
m=4
n=-6
The above is just a possible value you can come up with your own :D.
See below for an explanation.
Explanation:
Here you are going to really know the exponent rules. But in jest, you basically need to know that m+n=-2 due to exponent rules.
So?
An example would be
m=4
n=-6
Why?
Because 4-6=-2!