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 Question from Aditi: The power notation of -1 / 128

Hi,

Suppose the number was $\large \frac{-1}{8}$ then since $8 = 2 \times 2 \times 2 = 2^3$ you can write

$\frac{-1}{8} = \frac{-1}{2^3} = -1 \times 2^{-3} = \left( -2 \right)^3.$

Penny

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