document.write( "Question 382810: Please solve.\r
\n" ); document.write( "\n" ); document.write( "x^(2/3) - x^(1/3) - 12=0 \n" ); document.write( "

Algebra.Com's Answer #271233 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!

\n" ); document.write( "Use a substitution, let $\"u=x%5E%281%2F3%29\"$ , then $\"u%5E2=x%5E%282%2F3%29\"$
\n" ); document.write( " $\"u%5E2-u-12=0\"$
\n" ); document.write( " $\"%28u-4%29%28u%2B3%29=0\"$
\n" ); document.write( "Two solutions:
\n" ); document.write( " $\"u-4=0\"$
\n" ); document.write( " $\"u=4\"$
\n" ); document.write( " $\"x%5E%281%2F3%29=4\"$
\n" ); document.write( " $\"x=4%5E3\"$
\n" ); document.write( " $\"highlight%28x=64%29\"$
\n" ); document.write( ".
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\n" ); document.write( ".
\n" ); document.write( " $\"u%2B34=0\"$
\n" ); document.write( " $\"u=-3\"$
\n" ); document.write( " $\"x%5E%281%2F3%29=-3\"$
\n" ); document.write( " $\"x=%28-3%29%5E3\"$
\n" ); document.write( " $\"highlight%28x=-27%29\"$ \r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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