Answer:
[tex]a^{m-n}[/tex]
Step-by-step explanation:
If we have the expression [tex]m^a \div m^n[/tex], we can use exponent rules to simplify this.
Exponent rules say that [tex]x^a \div x^b = x^{a-b}[/tex]. In this case, x is a, a is m and b is n, so the same rule applied here.
So [tex]a^m \div a^n[/tex] will be equal to [tex]a^{m-n}[/tex].
Hope this helped!