Answer
1, 6, 15, 28, 45, 66; Sum is 161
Work Step by Step
$a_{n} = 2n^{2} - n$
1st term = 1
2nd term = 6
3rd term = 15
4th term = 28
5th term = 45
6th term = 66
$1+ 6 + 15 + 28 + 45+ 66 = 161$
Precalculus: Mathematics for Calculus, 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305071751
ISBN 13:
978-1-30507-175-9
Chapter 12 - Review - Test - Page 892: 1
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