#### Answer

$-2$

#### Work Step by Step

By definition, $\log_{a}x=2$ means $a^{2}=x.$
Then,
$\log_{a}(1/x)=\log_{a}(1/a^{2})=\log_{a}(a^{-2})=-2$

Published by
Pearson

ISBN 10:
0-32184-874-8

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

$-2$

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