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Mathematics 11 Online
OpenStudy (anonymous):

Please help for a medal?

OpenStudy (anonymous):

Simplify cube root of 7 over fifth root of 7.

OpenStudy (anonymous):

\[\frac{ \sqrt[3]{7} }{ \sqrt[5]{7} }\] like this?

OpenStudy (anonymous):

Yes, sorry for the delay.

OpenStudy (anonymous):

\[7^{1/3}-7^{1/5}\] = \[7^{2/15}\] or \[\sqrt[15]{49}\]

OpenStudy (anonymous):

not quite... \[\frac{ \sqrt[3]{7} }{ \sqrt[5]{7} }=\frac{ 7^{\frac{ 1 }{ 3 }} }{ 7^{\frac{ 1 }{ 5 }} }=7^{\left( \frac{ 1 }{ 3 }-\frac{ 1 }{ 5 } \right)}=7^{\left( \frac{ 5 }{ 15 }-\frac{ 3 }{ 15 } \right)}=7^{\frac{ 2 }{ 15 }}=\sqrt[15]{7^2}=\sqrt[15]{49}\]

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