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OpenStudy (anonymous):
how would you simplify 3^-9 over 3^-12
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OpenStudy (anonymous):
a^b over a^c = a^(b-c)
OpenStudy (anonymous):
so where did you get confused here?
OpenStudy (anonymous):
i dont know how to simplify it
OpenStudy (anonymous):
|dw:1340857068357:dw| do you know it now?
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