document.write( "Question 684079: Write a Quadratic equation with rational coefficients if one root is 4+sqrt( 5 ).\r
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Algebra.Com's Answer #423900 by ReadingBoosters(3246)\"\" \"About 
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If \"4%2Bsqrt%285%29\" is a root, then so is \"4-sqrt%285%29\";
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\n" ); document.write( "x = \"4%2B-sqrt%285%29\"
\n" ); document.write( "x - 4 = +/- \"sqrt%285%29\"
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\n" ); document.write( "\"%28x-4%29%5E2+=+sqrt%285%29%5E2\"
\n" ); document.write( "\"%28x-4%29%5E2+=+5\"
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\n" ); document.write( "\"x%5E2-8x%2B16+=+5\"
\n" ); document.write( "\"highlight_green%28x%5E2-8x%2B11=0%29\"
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