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