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OpenStudy (anonymous):
How do you calculate this?
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OpenStudy (anonymous):
\[-91^{-1}\]
OpenStudy (anonymous):
\[-91^{-1}=-\frac{ 1 }{ 91}\]
OpenStudy (anonymous):
The rule is \(a^{-b} = \frac{ 1 }{ a^b}\)
OpenStudy (anonymous):
oh okay gotcha thank you
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