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Question
Express the following as a rational number of the form \[\frac{p}{q},\] where p and q are integers and q ≠ 0.
\[\left( \frac{2}{3} \right)^{- 2}\]
Sum
Solution
We know that
\[a^{- n} = \frac{1}{a^n}\]
`(2/3)^(-2)=(3/2)^(2)=9/4`
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