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OpenStudy (anonymous):
If 5^x=9, what does 5^(-2x) mean?
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OpenStudy (anonymous):
equal** not mean
OpenStudy (anonymous):
\[5^x=9\] \[5^{-2x}=(5^x)^{-2}\] is a start
OpenStudy (precal):
|dw:1366078105913:dw|I believe they want you to solve for x in the first case and maybe substitute it into the second case, but I am not sure of this
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