How do you simplify #m ^ 2n^-2#?
If a term with a negative exponent changes position in a fraction, the exponent will become positive, like in this example
Negative exponents indicate that should they change where they are in a fraction, they will change from negative to positive.
In this case, let's start with:
I'm going to rewrite this as a fraction:
The positive exponent in m means it is fine where it is. The negative exponent in n means that if it changes position to the denominator, it will be positive there, like this: