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how do i write this as a single power

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how do i write this as a single power

by frankie10 on Sat Oct 23, 2010 4:43 pm

5^7/5^5

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Re: how do i write this as a single power

by Martingale on Sat Oct 23, 2010 6:16 pm

frankie10 wrote:5^7/5^5

$\frac{a^n}{a^m}=a^na^{-m}=a^{n-m}$

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