document.write( "Question 601283: apply the quadratic formula to find the roots of the given function, and then graph the function. \r
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Algebra.Com's Answer #379726 by Edwin McCravy(20055) $\"\"$ $\"About$

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document.write( "Normally you would not use the quadratic formula on such a simple\r\n" );
document.write( "propblem, but your teacher wants you to realize that the quadratic\r\n" );
document.write( "formula works on even the simplest problems:\r\n" );
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document.write( "0 = x² - 9\r\n" );
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document.write( "Insert a place-holder term, + 0x: \r\n" );
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document.write( "0 = x² + 0x - 9\r\n" );
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document.write( "Switch sides:\r\n" );
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document.write( "x² + 0x - 9 = 0\r\n" );
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document.write( "Give the x² a 1 coefficient:\r\n" );
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document.write( "1x² + 0x - 9 = 0\r\n" );
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document.write( "Compare that to\r\n" );
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document.write( "ax² + bx + c = 0\r\n" );
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document.write( "and get a=1, b=0, and c = -9\r\n" );
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document.write( "Edwin

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