document.write( "Question 605630: I am an online student for Algebra II and the program does not give explanations for problems entered in a specific way. I had a problem on a quiz today which I got wrong and have no idea why I got it wrong. Please explain how to simplify:\r
\n" ); document.write( "\n" ); document.write( "2/[3*cbrt(5)]\r
\n" ); document.write( "\n" ); document.write( "I tried to multiply both the numerator and denominator by 3*cbrt(5). The answer then would be 2*sqrt(5) over 15. But but this is wrong!
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Algebra.Com's Answer #381749 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
I think your problem is the cube root.
\n" ); document.write( "Suppose you have \"+root%283%2Cx%29+\"
\n" ); document.write( "In order to get rid of the cube root sign,
\n" ); document.write( "you should do this: \"+root%283%2Cx%29%2Aroot%283%2Cx%5E2%29+\"
\n" ); document.write( "That equals \"+root%283%2Cx%5E3%29+=+x+\"
\n" ); document.write( "----------------------------------
\n" ); document.write( "So, for your problem,
\n" ); document.write( "\"+%28+2%2F%283%2Aroot%283%2C5%29%29+%29%2A%28+root%283%2C5%5E2%29%2Froot%283%2C5%5E2%29+%29+\"
\n" ); document.write( "\"+%28+2%2Aroot%283%2C5%5E2%29%29+%2F+%283%2Aroot%283%2C5%5E3%29%29+\"
\n" ); document.write( "\"+%28+2%2Aroot%283%2C25%29%29+%2F+15+\"
\n" ); document.write( "I checked this punching in numbers:
\n" ); document.write( "\"+root%283%2C5%29+=+1.71+\"
\n" ); document.write( "\"+root%283%2C25%29+=+2.924+\"
\n" ); document.write( "It checked out- try it
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