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