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Mathematics 17 Online
OpenStudy (sparklestaraa):

Rewrite the rational exponent as a radical by extending the properties of integer exponents. (screenshot below)

OpenStudy (sparklestaraa):

OpenStudy (sparklestaraa):

@dan815

OpenStudy (jadzia):

First apple rule of exponents \(\large \frac{a^m}{a^n}=a^{m-n}\)

OpenStudy (jadzia):

*apply

OpenStudy (anonymous):

\[2^{\frac{ 7 }{ 8 }}/ 2^{\frac{ 2 }{ 8 }}=2^{\frac{ 5 }{ 8 }}=\sqrt[8]{2^{5}}\]

OpenStudy (sparklestaraa):

ohhh thanks can you explain so i understand how to do this on my own :D

OpenStudy (anonymous):

Look at what Jadzia said \[\frac{a^\color{red}m}{a^\color{blue}n}=a^{\color{red}{m}-\color{blue}{n}} \] Your m is 7/8, your n= 2/8, your a =2 you have \[\frac{2^\color{red}{7/8}}{2^\color{blue}{2/8}}=2^{(\color{red}{7/8}-\color{blue}{2/8})} \]

OpenStudy (anonymous):

and \(\dfrac{7}{8}-\dfrac{2}{8}=\dfrac{5}{8}\) like what unu811 said, you have the answer. LOLLOLLOL... you have the method from Jadzia the result from unu811 and the explanation from me Hopefully you can do it by yourself. :)

OpenStudy (sparklestaraa):

lol :) thanks so much xd one thing how did 8 get on the outside and 5 on the inside?

OpenStudy (anonymous):

Because it is the rule of root

OpenStudy (anonymous):

Like |dw:1420922455230:dw|

OpenStudy (anonymous):

it means |dw:1420922472286:dw|

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