#### Answer

$\{-11,11\}$

#### Work Step by Step

Since $(
-11
)^2=
121
$ and $
11
^2=
121
$, the square roots of $
121
$ are $
\{-11,11\}
$.

Published by
Pearson

ISBN 10:
0-32184-874-8

ISBN 13:
978-0-32184-874-1

$\{-11,11\}$

Since $(
-11
)^2=
121
$ and $
11
^2=
121
$, the square roots of $
121
$ are $
\{-11,11\}
$.

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