document.write( "Question 138272: Please help me with this problem:\r
\n" ); document.write( "\n" ); document.write( "How would you solve this by multiplying, then simplifying?\r
\n" ); document.write( "\n" ); document.write( "(sqrt2+ 1)(sqrt2 -1)
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Algebra.Com's Answer #101081 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
In general,
\n" ); document.write( "\"%28a%2Bb%29%28c%2Bd%29=ac%2Bad%2Bbc%2Bbd\"
\n" ); document.write( "Specifically in your case,
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\n" ); document.write( "\"%28sqrt%282%29%2B1%29%28sqrt%282%29-1%29=2-sqrt%282%29%2B%28sqrt%282%29%29-1\"
\n" ); document.write( "\"%28sqrt%282%29%2B1%29%28sqrt%282%29-1%29=2-1\"
\n" ); document.write( "\"%28sqrt%282%29%2B1%29%28sqrt%282%29-1%29=1\"
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