document.write( "Question 1014219: The product of two consecutive even
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Algebra.Com's Answer #630540 by Edwin McCravy(20063)\"\" \"About 
You can put this solution on YOUR website!
The product of two consecutive even
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document.write( "In problems like this, sometimes you can just guess them.  \r\n" );
document.write( "But if you can't, then do it this way:\r\n" );
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document.write( "x = first even integer\r\n" );
document.write( "x+2 = second even integer\r\n" );
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document.write( "x(x+2) = 120\r\n" );
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document.write( "x² + 2x = 120\r\n" );
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document.write( "x² + 2x - 120 = 0\r\n" );
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document.write( "\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4ac+%29%29%2F%282a%29+\"\r\n" );
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document.write( "a=1, b=2, c=-120\r\n" );
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document.write( "\"x+=+%28-%282%29+%2B-+sqrt%28+%282%29%5E2-4%281%29%28-120%29+%29%29%2F%282%281%29%29+\"\r\n" );
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document.write( "\"x+=+%28-2+%2B-+sqrt%284%2B480+%29%29%2F%282%281%29%29+\"\r\n" );
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document.write( "\"x+=+%28-2+%2B-+sqrt%28484%29+%29%2F2+\"\r\n" );
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document.write( "\"x+=+%28-2+%2B-+22+%29%2F2+\"\r\n" );
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document.write( "Using the +\r\n" );
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document.write( "\"x+=+%28-2+%2B+22+%29%2F2+\"\r\n" );
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document.write( "\"x+=+20%2F2+\"\r\n" );
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document.write( "\"x+=+10+\"\r\n" );
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document.write( "So one solution is\r\n" );
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document.write( "x = 10 = first even integer\r\n" );
document.write( "x+2 = 10+2 = 12 = second even integer\r\n" );
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document.write( "Using the -\r\n" );
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document.write( "\"x+=+%28-2+-+22+%29%2F2+\"\r\n" );
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document.write( "\"x+=+%28-24%29%2F2+\"\r\n" );
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document.write( "\"x+=+-12+\"\r\n" );
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document.write( "So another solution is\r\n" );
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document.write( "x = -12 = first even integer\r\n" );
document.write( "x+2 = -12+2 = -10 = second even integer\r\n" );
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document.write( "Edwin
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