document.write( "Question 219094: What is the square root of 18? But it has to be simplifed. My teacher said i had to do something with factors to get the answer but he lost me. \n" ); document.write( "

Algebra.Com's Answer #164836 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"sqrt%2818%29+=+sqrt%282%2A9%29\"$
\n" ); document.write( " $\"sqrt%282%2A9%29+=+sqrt%282%29%2Asqrt%289%29\"$
\n" ); document.write( " $\"sqrt%282%29%2Asqrt%289%29+=+3%2Asqrt%282%29\"$
\n" ); document.write( " $\"sqrt%282%29+=+1.414\"$
\n" ); document.write( " $\"3%2Asqrt%282%29+=+3%2A1.414\"$
\n" ); document.write( " $\"3%2A1.414+=+4.243\"$ answer
\n" ); document.write( "check:
\n" ); document.write( " $\"sqrt%2818%29+=+4.243\"$
\n" ); document.write( "Square both sides
\n" ); document.write( " $\"18+=+18.0030\"$ (error due to rounding off)
\n" ); document.write( " \n" ); document.write( "

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