Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 12 Sequences and Series - Chapter Review - Page 840: 6



Work Step by Step

$a_2=10-4(2)=2$ $a_3=10-4(3)=-2$ $a_4=10-4(4)=-6$ $a_5=10-4(5)=-10$ $a_6=10-4(6)=-14$ Hence $\sum_{i=2}^6(10-4i)=2-2-6-10-14=-30$
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