document.write( "Question 402303: Quadratic Formula: Solve\r
\n" ); document.write( "\n" ); document.write( "3 = 5/x + 4/x^2\r
\n" ); document.write( "\n" ); document.write( "they say the answer is 5 + or - sqrt of 73 / 6, I get -5 + or - sqrt of 73 over 8. Please walk me thru each step. Thanks
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Algebra.Com's Answer #284604 by Edwin McCravy(20055)\"\" \"About 
You can put this solution on YOUR website!
\"3\"\"%22%22=%22%22\"\"5%2Fx\"\"%22%22%2B%22%22\"\"4%2Fx%5E2\"
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document.write( "Multiply through by LCD = x² to clear of fractions\r\n" );
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document.write( "\"red%28x%5E2%29%2A3\"\"%22%22=%22%22\"\"red%28x%5E2%29%2Aexpr%285%2Fx%29\"\"%22%22%2B%22%22\"\"red%28x%5E2%29%2Aexpr%284%2Fx%5E2%29\"\r\n" );
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document.write( "\"3x%5E2\"\"%22%22=%22%22\"\"red%28x%5Ecross%282%29%29%2Aexpr%285%2Fcross%28x%29%29\"\"%22%22%2B%22%22\"\"red%28cross%28x%5E2%29%29%2Aexpr%284%2Fcross%28x%5E2%29%29\"\r\n" );
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document.write( "\"3x%5E2\"\"%22%22=%22%22\"\"5x\"\"%22%22%2B%22%22\"\"4\"\r\n" );
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document.write( "Get 0 on the right and the left in descending order:\r\n" );
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document.write( "\"3x%5E2\"\"%22%22-%22%22\"\"5x\"\"%22%22-%22%22\"\"4\"\"%22%22=%22%22\"\"0\"\r\n" );
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document.write( "Compare that to:\r\n" );
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document.write( "\"ax%5E2\"\"%22%22%2B%22%22\"\"bx\"\"%22%22%2B%22%22\"\"c\"\"%22%22=%22%22\"\"0\"\r\n" );
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document.write( "and we see that\r\n" );
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document.write( "\"a=3\", \"b=-5\", \"c=-4\"\r\n" );
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document.write( "So we substitute in:\r\n" );
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document.write( "\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"\r\n" );
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document.write( "\"x+=+%28-%28-5%29+%2B-+sqrt%28%28-5%29%5E2-4%2A%283%29%2A%28-4%29+%29%29%2F%282%2A%283%29%29+\"\r\n" );
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document.write( "\"x+=+%285+%2B-+sqrt%2825%2B48%29%29%2F6+\"\r\n" );
document.write( " \r\n" );
document.write( "\"x+=+%285+%2B-+sqrt%2873%29%29%2F6+\"\r\n" );
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document.write( "Edwin
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