document.write( "Question 474813: Subtract. Simplify by collecting like radical terms if possible.
\n" ); document.write( "2sqrt(18)-2sqrt(2)
\n" ); document.write( "(Simplify your answer. Type an exact answer, using radicals as needed.) \n" ); document.write( "

Algebra.Com's Answer #325712 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

You can put this solution on YOUR website!
Subtract. Simplify by collecting like radical terms if possible.
\n" ); document.write( " $\"2sqrt%2818%29-2sqrt%282%29\"$
\n" ); document.write( ":
\n" ); document.write( "Factor inside the 1st radical to reveal a perfect square
\n" ); document.write( " $\"2sqrt%289%2A2%29-2sqrt%282%29\"$
\n" ); document.write( "Extract the square root of 9
\n" ); document.write( " $\"2%2A3sqrt%282%29-2sqrt%282%29\"$
\n" ); document.write( " $\"6sqrt%282%29-2sqrt%282%29\"$
\n" ); document.write( "now we have like terms so just subtract, leaving us with:
\n" ); document.write( " $\"4sqrt%282%29\"$
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\n" ); document.write( "you can always check these type of problems in a good calc
\n" ); document.write( "enter the original problem: $\"2sqrt%2818%29-2sqrt%282%29\"$ results in 5.6568..
\n" ); document.write( "enter your simplified expression $\"4sqrt%282%29\"$ results in 5.6568, the same so you know it's right.
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