Answer
-15
Work Step by Step
We know that $\sqrt 225=15$, because $15^{2}=225$.
Therefore,$-\sqrt 225=-(15)=-15$.
Intermediate Algebra (12th Edition)
by Lial, Margaret L.; Hornsby, John; McGinnis, Terry
Published by
Pearson
ISBN 10:
0321969359
ISBN 13:
978-0-32196-935-4
Chapter R - Test - Chapter R Test - Page 41: 18
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