u v 3 w − u v 3 + 2 u v 2 w 2 − 4 u v 2 w + 2 u v 2 + u v w 3 − 4 u v w 2 + 3 u v w − u w 3 + 2 u w 2 − 2 v 3 w + v 3 − 3 v 2 w 2 + 4 v 2 w − v 2 − 2 v w 3 + 4 v w 2 − 2 v w + w 3 − w 2 u v 3 / 2 w 3 / 2 {\displaystyle {\frac {uv^{3}w-uv^{3}+2uv^{2}w^{2}-4uv^{2}w+2uv^{2}+uvw^{3}-4uvw^{2}+3uvw-uw^{3}+2uw^{2}-2v^{3}w+v^{3}-3v^{2}w^{2}+4v^{2}w-v^{2}-2vw^{3}+4vw^{2}-2vw+w^{3}-w^{2}}{{\sqrt {u}}v^{3/2}w^{3/2}}}}