Answer
9680
Work Step by Step
If we want to find the 22nd term, we have to substitute $n$ by 22:
$a_{22}=4(22)^2(2(22)-39)=4\times484\times(44-39)=9680$
Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)
by Bittinger, Marvin L.; Ellenbogen, David J.; Johnson, Barbara L.
Published by
Pearson
ISBN 10:
0-32184-874-8
ISBN 13:
978-0-32184-874-1
Chapter 14 - Sequences, Series, and the Binomial Theorem - 14.1 Sequences and Series - 14.1 Exercise Set - Page 894: 20
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