( w − 1 ) ( − u v 2 w − u v + u + v 2 w 3 − v w 3 − w 2 ) u v w 2 {\displaystyle {\frac {(w-1)\left(-uv^{2}w-uv+u+v^{2}w^{3}-vw^{3}-w^{2}\right)}{{\sqrt {u}}vw^{2}}}}
