document.write( "Question 158587: im confused on how rto wokr this sequence out
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document.write( "0,14, 52, 126, 248
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document.write( "i have tried n cubed but cannot find the answer?
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Algebra.Com's Answer #116821 by Edwin McCravy(20060)![]() ![]() You can put this solution on YOUR website! I'm confused on how to work this sequence out \n" ); document.write( " 0, 14, 52, 126, 248 \n" ); document.write( "I have tried n cubed but cannot find the answer?\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \r\n" ); document.write( "First we make a difference table by subtracting \r\n" ); document.write( "each adjacent pair, placing the difference between\r\n" ); document.write( "and below each pair. Then doing the same thing\r\n" ); document.write( "again until the numbers are all the same:\r\n" ); document.write( "\r\n" ); document.write( " 0 14 52 126 248 \r\n" ); document.write( " 14 38 74 122 \r\n" ); document.write( " 24 36 48 \r\n" ); document.write( " 12 12\r\n" ); document.write( "\r\n" ); document.write( "It takes 3 lines before the differences are the same, 12.\r\n" ); document.write( "\r\n" ); document.write( "Therefore we must assume a 3rd degree polynomial:\r\n" ); document.write( "\r\n" ); document.write( "\n" ); document.write( " |