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 Question from angie, a student: How do i write 9^-5 in exponential form?

Hi Angie,

Writing an expression in exponential form just means that you use exponents. Thus I would say that $9^{-5}$ is already in exponential form. Maybe you are expected to write

$9^{-5} = \left( \frac19 \right)^5 .$

Penny

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