u v 2 w 4 − 2 u v 2 w 3 + 2 u v 2 w 2 + u v w 3 − u v w 2 + v w 2 − v w − 2 w 2 + 2 w − 1 u v w 2 {\displaystyle {\frac {uv^{2}w^{4}-2uv^{2}w^{3}+2uv^{2}w^{2}+uvw^{3}-uvw^{2}+vw^{2}-vw-2w^{2}+2w-1}{{\sqrt {u}}vw^{2}}}}
