Answer
$50$
Work Step by Step
If $\int ^{4}_{2}dx=2$ (given in question)$\Rightarrow $
$$\int ^{4}_{2}25dx=25\int ^{4}_{2}dx=25\times 2=50$$
Calculus 10th Edition
by Larson, Ron; Edwards, Bruce H.
Published by
Brooks Cole
ISBN 10:
1-28505-709-0
ISBN 13:
978-1-28505-709-5
Chapter 4 - Integration - Page 274: 36
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