document.write( "Question 124528: Simplify by combining like terms.\r
\n" ); document.write( "\n" ); document.write( "1) 5 square root of 8 MINUS 2 square root of 50 PLUS square root of 18\r
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\n" ); document.write( "\n" ); document.write( "2) 3 square root of 5 MINUS square root of 45
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Algebra.Com's Answer #91272 by Earlsdon(6294)\"\" \"About 
You can put this solution on YOUR website!
Simplify:
\n" ); document.write( "1) \"5sqrt%288%29-2sqrt%2850%29%2Bsqrt%2818%29\"
\n" ); document.write( "The technique to use here is to factor the quantity under the radical (the radicand) looking for perfect squares in the factors. When you do find a factor that is a perfect square, take its square root and move the result outside of the radical.
\n" ); document.write( "Like this:
\n" ); document.write( "\"5sqrt%288%29+=+5sqrt%282%2A4%29\" the 4 is a perfect square and its square root is 2, so you can rewrite this as:
\n" ); document.write( "\"5sqrt%288%29+=+5sqrt%282%2A4%29\"=\"5%2A2sqrt%282%29+=+10sqrt%282%29\"
\n" ); document.write( "See the idea?
\n" ); document.write( " Simplifying, we get:
\n" ); document.write( "\"10sqrt%282%29-10sqrt%282%29%2B3sqrt%282%29=3sqrt%282%29\"
\n" ); document.write( "2) Simplify:
\n" ); document.write( "\"3sqrt%285%29-sqrt%2845%29=+3sqrt%285%29-sqrt%285%2A9%29\"=\"3sqrt%285%29-3sqrt%285%29+=+0\"
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