Answer
$a_n=-1(2)^n$
Work Step by Step
The terms are the negative powers of $2$. Hence, a possible general term is
\begin{array}{l}\require{cancel}
a_n=-1(2)^n
.\end{array}
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 11 - Section 11.1 - Sequences - Exercise Set - Page 639: 35
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