document.write( "Question 948455: complete the sequence -20;-18;-14;-8\r
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Algebra.Com's Answer #579121 by Edwin McCravy(20056) $\"\"$ $\"About$

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-20;-18;-14;-8
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document.write( "Start with -20\r\n" );
document.write( "-20 +  2 = -18\r\n" );
document.write( "-18 +  4 = -14\r\n" );
document.write( "-14 +  6 =  -8\r\n" );
document.write( " -8 +  8 =   0\r\n" );
document.write( "  0 + 10 =  10\r\n" );
document.write( " 10 + 12 =  22\r\n" );
document.write( " 22 + 14 =  36\r\n" );
document.write( " 36 + 16 =  52\r\n" );
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document.write( "To find the general term:\r\n" );
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document.write( "Assume a quadratic general term:\r\n" );
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document.write( "Substitute \r\n" );
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document.write( "Solve the resulting system of 3 equations in 3 unknowns\r\n" );
document.write( "A,B, and C:\r\n" );
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document.write( "The resulting general term when factored is \r\n" );
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document.write( "Edwin

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