k3orneyKerva k3orneyKerva

26-01-2016
Mathematics

contestada

Which expression is equivalent to (3^2)^-2

a. -81
b. -12
c. 1/81
d. 1/12

Respuesta :

Evelynxo14 Evelynxo14

26-01-2016

c. 1/81
First simplify what's in the parenthesis
(3^2)= 9
Now your answer is:
9^-2
but there is no such thing as a negative exponent so write the expression as a fraction
1/9^2
and simply simplify so your answer is
1/81

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