Perform the Indicated Operations $\frac{6^{-5}}{6^{-1} \cdot 6^{-2}}$ (B) $(y+3)^{-1 / 6}(y+3)^{-5 / 12}$

Essay

Perform the indicated operations. Write your answers with only positive exponents. Assume that all variables represent positive real numbers.
(a) $\frac{6^{-5}}{6^{-1} \cdot 6^{-2}}$
(b) $(y+3)^{-1 / 6}(y+3)^{-5 / 12}$
(c) $\left(r^{-1} s^{2 / 3}\right)^{6}\left(8 r^{6} s^{-2}\right)^{-1 / 3}$