This is a 11 question assignment that I need help with.

we are given the following expressions:
[tex]3^9=19683[/tex][tex]3^4=81[/tex][tex]-9^2=-81[/tex][tex]9^9=387420489[/tex][tex]81^1=81[/tex]Therefore, the equivalent expressions are:
[tex]3^4,81^1[/tex]