The expression
$\displaystyle {\left({r}{s}\right)}^{{-{2}}}{\left({2}{s}\right)}^{{6}}{\left({2}{r}\right)}^{{6}}$
equals $\displaystyle {c}{r}^{{{e}}}{s}^{{d}}$ where
the coefficient $\displaystyle {c}$ is , the exponent $\displaystyle {e}$ of $\displaystyle {r}$ is , the exponent $\displaystyle {d}$ of $\displaystyle {s}$ is .