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Mathematics 16 Online
OpenStudy (anonymous):

2 _______ ^-3 4

OpenStudy (imstuck):

is that\[(\frac{ 2 }{ 4 })^{-3}\]

OpenStudy (anonymous):

-3 is the exponent.

OpenStudy (imstuck):

ok the first thing you have to do is reduce the 2/4 to 1/2. Then you have this expression:\[(\frac{ 1 }{ 2 })^{-3}\]

OpenStudy (imstuck):

then you have to remember the rules about negative exponents. Do you know them?

OpenStudy (anonymous):

no

OpenStudy (imstuck):

Ok here is the rule:\[x ^{-y}=\frac{ 1 }{x ^{y}}\]

OpenStudy (imstuck):

For us that translates to:\[\frac{ 1 }{ (\frac{ 1 }{ 2 })^{3} }\]

OpenStudy (anonymous):

ok

OpenStudy (imstuck):

which simplifies to\[\frac{ 1 }{ \frac{ 1 }{ 8 } }\]which simplifies to 8

OpenStudy (imstuck):

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