document.write( "Question 907789: what the next term in the sequence -1,1,5,11,19 in solving this problem \n" ); document.write( "
Algebra.Com's Answer #550619 by richwmiller(17219)\"\" \"About 
You can put this solution on YOUR website!
-1,1,5,11,19,29,41,55\r
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\n" ); document.write( "\n" ); document.write( "-1 2 2 0 0 0 0
\n" ); document.write( "1 4 2 0 0 0 0
\n" ); document.write( "5 6 2 0 0 0
\n" ); document.write( "11 8 2 0 0
\n" ); document.write( "19 10 2 0
\n" ); document.write( "29 12 2
\n" ); document.write( "41 14
\n" ); document.write( "55
\n" ); document.write( "The first column is our list of numbers from the series
\n" ); document.write( "The second column is the list of differences between each item in the series
\n" ); document.write( "they increase by two each time
\n" ); document.write( "2,4,6,8,10,12,14
\n" ); document.write( "-1,1,5,11,19,29,41,55 differ by (-1 to 1 )2 then 4 (1 to 5) then 6 (6 to 11) then 8 (11 to 19(
\n" ); document.write( "The third column is the list of differences between the first differences
\n" ); document.write( "which is always 2
\n" ); document.write( "2,4,6,8,10,12,14 differ by 2\r
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