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\frac{3^{-2}}{3^{-2}\times 3^{4}}
To raise a power to another power, multiply the exponents. Multiply 2 and -1 to get -2.
\frac{3^{-2}}{3^{2}}
To multiply powers of the same base, add their exponents. Add -2 and 4 to get 2.
\frac{1}{3^{4}}
Rewrite 3^{2} as 3^{-2}\times 3^{4}. Cancel out 3^{-2} in both numerator and denominator.
\frac{1}{81}
Calculate 3 to the power of 4 and get 81.