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Mathematics 17 Online
OpenStudy (anonymous):

40/square root5

OpenStudy (saifoo.khan):

8 root5

OpenStudy (anonymous):

can you show the work please

OpenStudy (saifoo.khan):

sure.

OpenStudy (saifoo.khan):

http://www.twiddla.com/561330

OpenStudy (anonymous):

Any time you have \[1/sqrt(x)\]you can multiply by \[sqrt(x)/sqrt(x)=x\]to get \[(1/sqrt(x))*(sqrt(x)/sqrt(x))=sqrt(x)/x\]In your problem that would leave\[40*sqrt(5)/5=8*sqrt(5)\]

OpenStudy (anonymous):

sorry \[sqrt(x)/sqrt(x)=1\] not \[x\]

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