Asked by jess

9^-1/9 the formula for this is b^m/a^n but when you do it it doesn't equal 1/81?
Answered by Reiny
yes it does

9^-1 / 9
= 9^-1 / 9^1
= 9^(-1-1)
= 9^-2
= 1/9^2
= 1/81
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