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Mathematics 16 Online
OpenStudy (horsegirl27):

medal and fan please help me!!!!!!!!! I really need help, I have done this lesson, but that was useless, I have no clue how to do this, I'm so confused!!!!! Please help me out!!! :)

OpenStudy (horsegirl27):

OpenStudy (horsegirl27):

I do not know how to do this at all :/

OpenStudy (misty1212):

HI!!!

OpenStudy (misty1212):

write both in exponential notation

OpenStudy (misty1212):

\[\sqrt8=8^{\frac{1}{2}}\]and \[\sqrt[5]{8}=8^{\frac{1}{5}}\]

OpenStudy (misty1212):

you have \[\huge \frac{8^{\frac{1}{2}}}{8^{\frac{1}{5}}}\]

OpenStudy (horsegirl27):

hi!! Ok

OpenStudy (misty1212):

then use the property of exponents to get \[\huge 8^{\frac{1}{2}-\frac{1}{5}}\]

OpenStudy (horsegirl27):

Hmm could u refresh me on the property of exponents please?

OpenStudy (misty1212):

so your real job is to do the subtraction \[\huge \frac{1}{2}-\frac{1}{5}\]

OpenStudy (misty1212):

that property is when you divide, you subtract the exponents sometimes written as \[\huge \frac{b^m}{b^n}=b^{m-n}\]

OpenStudy (horsegirl27):

oh ok, lol I knew that XD

OpenStudy (horsegirl27):

So that would be 3/10

OpenStudy (horsegirl27):

Therefore my answer is C, right?

OpenStudy (horsegirl27):

@misty1212

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