document.write( "Question 1208902: Find the quadratic formula online. Solve the formula for c. \n" ); document.write( "
Algebra.Com's Answer #847417 by mccravyedwin(407)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "\"x+\"\"%22%22=%22%22\"\"+%28-b+%2B-+sqrt%28+b%5E2-4ac+%29%29%2F%282a%5E%22%22%29+\"\r\n" );
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document.write( "Multiply both sides by 2a to clear the fraction\r\n" );
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document.write( "\"2ax+\"\"%22%22=%22%22\"\"+-b+%2B-+sqrt%28+b%5E2-4ac+%29+\"\r\n" );
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document.write( "Add b to both sides to isolate the radical term\r\n" );
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document.write( "\"2ax+%2Bb+\"\"%22%22=%22%22\"\"%22%22+%2B-+sqrt%28+b%5E2-4ac+%29+\"\r\n" );
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document.write( "Square both sides to eliminate the radical\r\n" );
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document.write( "\"4a%5E2x%5E2%2B4abx%2Bb%5E2\"\"%22%22=%22%22\"\"b%5E2-4ac\"\r\n" );
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document.write( "Add -b2 to both sides\r\n" );
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document.write( "\"4a%5E2x%5E2%2B4abx\"\"%22%22=%22%22\"\"-4ac\"\r\n" );
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document.write( "Divide through by -4a\r\n" );
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document.write( "\"%284a%5E2x%5E2%29%2F%28-4a%5E%22%22%29%2B%284abx%5E%22%22%29%2F%28-4a%5E%22%22%29\"\"%22%22=%22%22\"\"%28-4ac%5E%22%22%29%2F%28-4a%5E%22%22%29\"\r\n" );
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document.write( "Simplify\r\n" );
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document.write( "\"-ax%5E2-bx\"\"%22%22=%22%22\"\"c\"\r\n" );
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document.write( "Add -c to both sides to get 0 on the right\r\n" );
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document.write( "\"-ax%5E2-bx-c\"\"%22%22=%22%22\"\"0\"\r\n" );
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document.write( "Multiply through by -1 to minimize negative and minus signs:\r\n" );
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document.write( "\"ax%5E2%2Bbx%2Bc\"\"%22%22=%22%22\"\"0\"\r\n" );
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document.write( "which is the general quadratic equation, which is what we always \r\n" );
document.write( "start with to derive the quadratic formula.\r\n" );
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document.write( "Edwin
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