Question
Express the following in power notation: $\Big(\frac{-13}{11}\Big)^2$
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Answer
$\Big(\frac{-13}{11}\Big)^2=\frac{-13}{11}\times \frac{-13}{11}$ $=\frac{(-13)\times(-13)}{11\times11}$ $=\frac{169}{121}$
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