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प्रश्न
Simplify:
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उत्तर
\[\left\{ \left( \frac{1}{2} \right)^{- 1} \times ( - 4 )^{- 1} \right\}^{- 1}\] `=((1/(1/2))xx(1/(-4)))^(-1)` `->(a^(-1)=1/a)`
`=(2xx(1/-4))^(-1)`
`=(1/(-2))^(-1)`
`=1/(1/(-2))` `->(a^(-1)=1/a)`
= -2
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