document.write( "Question 876668: I can't understand how the solution set to (x-4)^(2/3)=16 is {-60,68}? I need precise step-by-step info, because I am looking at an example problem, and I'm still not getting it. \n" ); document.write( "

Algebra.Com's Answer #528943 by Edwin McCravy(20055) $\"\"$ $\"About$

You can put this solution on YOUR website!

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document.write( "Here's an alternate way.  Slightly different:\r\n" );
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document.write( "We want to make the exponent  become a whole\r\n" );
document.write( "number. So we raise both sides to the 3 power. That is,\r\n" );
document.write( "we cube both sides:\r\n" );
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document.write( "Use the principle of square roots:\r\n" );
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document.write( "x-4 = 64;      x-4 = -64\r\n" );
document.write( "  x = 68;        x = -68\r\n" );
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document.write( "Edwin

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