document.write( "Question 78462: can someone explain to me how do simplify this by combining like terms when there is no like terms?\r
\n" ); document.write( "\n" ); document.write( "xsqrt\"18\"-3sqrt\"8x%5E2\"
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Algebra.Com's Answer #56272 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
xsqrt18-3sqrt8x^2\r
\n" ); document.write( "\n" ); document.write( "=xsqrt(9*2) - 3sqrt(4x^2*2)\r
\n" ); document.write( "\n" ); document.write( "=3xsqrt2 - (2x)3sqrt2\r
\n" ); document.write( "\n" ); document.write( "=3xsqrt2 - 6xsqrt2\r
\n" ); document.write( "\n" ); document.write( "= -3xsqrt2
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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