Answer:
[tex] \boxed{ \tt{0}}[/tex]
Step-by-step explanation:
[tex]if \: mº - {n}^{2} \: for \: m = 2 \: and \: n = -1. \\ {2}^{0} - ( { - 1)}^{2} = 1 - (1) = 0[/tex]
