document.write( "Question 1141724: A quadratic pattern has a second term equal to 1,A third term equal to -6 and a fifth term equal to -4
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Algebra.Com's Answer #762336 by greenestamps(13208) $\"\"$ $\"About$

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document.write( "The first five terms of the quadratic sequence are\r
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document.write( "   a     1    -6     b    -4\r
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document.write( "The second differences of a quadratic sequence are constant.\r
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document.write( "   a      1    -6       b      -4   the sequence
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document.write( "     1-a    -7    b+6      -b-4     first differences
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document.write( "         a-8  b+13   -2b-10         second differences\r
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document.write( "So a-8 = b+13 = -2b-10.  Then\r
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document.write( "And then\r
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document.write( "ANSWERS:\r
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document.write( "The first term is a = 40/3
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document.write( "The constant second difference is a-8 = 16/3 \n" );
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