Answer
$36$
Work Step by Step
RECALL:
$a^{-m} = \dfrac{1}{a^m}, a \ne0$
Use the rule above to have:
$=\dfrac{1}{(\frac{1}{6})^2}
\\=\dfrac{1}{\frac{1}{36}}
\\=1 \cdot \dfrac{36}{1}
\\=36$
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