Laws of Index 6

\(\left({x}^{-1}{y}^{-4}{z}^{-2}{w}^{-3}\right)\left({x}^{5}{y}^{-1}{z}^{-4}{w}^{4}\right)=\left(1\right)\left(1\right){x}^{-1+5}{y}^{-4-1}{z}^{-2-4}{w}^{-3+4}={x}^{4}{y}^{-5}{z}^{-6}w\)