( w − 1 ) ( u v w 3 + u v w 2 − u v w + u v − u w 2 + u w + v w 3 − v w 2 + w 4 − w 3 + w 2 + w ) u v w 5 / 2 {\displaystyle {\frac {(w-1)\left(uvw^{3}+uvw^{2}-uvw+uv-uw^{2}+uw+vw^{3}-vw^{2}+w^{4}-w^{3}+w^{2}+w\right)}{{\sqrt {u}}{\sqrt {v}}w^{5/2}}}}
