Answer
$-2log_{6}7 $
Work Step by Step
The power property of logarithms tells us that $log_{b}x^{r}=r log_{b}x$ (where x and b are positive real numbers, $b\ne1$, and r is a real number).
Therefore, $ log_{6}7^{-2}=-2 \times log_{6}7=-2log_{6}7 $.
