Answer
$-60$
Work Step by Step
The given summation notation is expressed as
$5(2)^{2}(-1)^{2-1}+5(2)^{3}(-1)^{3-1}+5(2)^{4}(-1)^{4-1}$
$=5(2)^{2}(-1)^{1}+5(2)^{3}(-1)^{2}+5(2)^{4}(-1)^{3}$
$=-5(4)+5(8)-5(16)$
$=-20+40-80$
$=-100+40$
$=-60$
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 11 - Test - Page 669: 10
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