Answer
$3$
Work Step by Step
$\sqrt {25-16}$
$=\sqrt {9}$
$=3$ because $3^{2}=9$
College Algebra (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-32178-228-3
ISBN 13:
978-0-32178-228-1
Chapter P - Prerequisites: Fundamental Concepts of Algebra - Exercise Set P.3 - Page 48: 7
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