When solving a quadratic equation you have\r\n" );
document.write( "0,1,2 solutions. What does this mean \"graphically?\r\n" );
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document.write( "If there are no real solutions, the graph does not \r\n" );
document.write( "cross the x axis. It would either look like something like this:\r\n" );
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document.write( "or like this\r\n" );
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document.write( "If there is just one real solution, the graph just touches but does\r\n" );
document.write( "not cross the x axis. It would either look like something like this,\r\n" );
document.write( "which has the one solution x = 1\r\n" );
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document.write( "or like this, whose one solution is x = 5\r\n" );
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document.write( "If there is just one real solution, the graph cross the x axis\r\n" );
document.write( "twice. It would either look like something like this, whose\r\n" );
document.write( "two solutions are x = 2 and x = 4:\r\n" );
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\r\n" );
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document.write( "or like this, which has the two solutions x=1 and x = 5\r\n" );
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document.write( "Edwin
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