4 years ago

Please help me please

1 answer:

5 0

$3^{ \frac{11}{5} }:3^{ -\frac{9}{5} }=3^{ \frac{11}{5} -(-\frac{9}{5}) }=3^{\frac{20}{5} }=3^{ 4}=81$

the answer is 81

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