#### Answer

$-1$ and $1$

#### Work Step by Step

Solve the equation by taking the fourth root of both sides:
$x = \pm \sqrt[4]{1}
\\x=\pm 1.$
Therefore, the two real solutions of the given equation are $-1$ and $1$.

Published by
Prentice Hall

ISBN 10:
0133186024

ISBN 13:
978-0-13318-602-4

$-1$ and $1$

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