## College Algebra (6th Edition)

$-6log_{b}N$
According to the power rule of logarithms, we know that $log_{b}M^{p}=plog_{b}M$ (when $b$ and $M$ are positive real numbers, $b\ne1$, and $p$ is any real number). Therefore, $log_{b}N^{-6}=-6log_{b}N$.