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