document.write( "Question 281641: Rationalize the denominator assuming all radicals represent positive numbers.
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Algebra.Com's Answer #204619 by Edwin McCravy(20055)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "\"%28sqrt%28c%29-sqrt%28d%29%29%2F%28sqrt%28c%29%2Bsqrt%28d%29%29\"\r\n" );
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document.write( "Put parentheses around the numerator and denominator\r\n" );
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document.write( "\"%28%28sqrt%28c%29-sqrt%28d%29%29%29%2F%28%28sqrt%28c%29%2Bsqrt%28d%29%29%29\"\r\n" );
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document.write( "Form the conjugate of the denominator. that is,\r\n" );
document.write( "change the sign of the second term of \"%28sqrt%28c%29%2Bsqrt%28d%29%29\",\r\n" );
document.write( "making it \"red%28%28sqrt%28c%29-sqrt%28d%29%29%29%29\"\r\n" );
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document.write( "Now multiply top and bottom of\r\n" );
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document.write( "\"%28%28sqrt%28c%29-sqrt%28d%29%29%29%2F%28%28sqrt%28c%29%2Bsqrt%28d%29%29%29\"\r\n" );
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document.write( "by the conjugate \"red%28%28sqrt%28c%29-sqrt%28d%29%29%29%29\"\r\n" );
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document.write( "Use FOIL on the top and the bottom:\r\n" );
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document.write( "Combine the middle two terms on top as \"-2sqrt%28cd%29\"\r\n" );
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document.write( "Change the \"sqrt%28c%5E2%29\" to just \"c\" and \"sqrt%28d%5E2%29\" to just \"d\"\r\n" );
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document.write( "\"%0D%0A%28c-2sqrt%28cd%29%2Bd%29%0D%0A%2F%28c-d%29+\"\r\n" );
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document.write( "Edwin
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