Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 7 - Section 7.1 - Radicals and Radical Functions - Exercise Set - Page 417: 55



Work Step by Step

$\sqrt 121=11$, because $11^{2}=11\times11=121$ Therefore, $-\sqrt 121=-11$. In this case, we are just taking the opposite of $\sqrt 121$, which is $-(11)=-11$
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