− 3 u 3 v 3 + 3 u 3 v 2 − u 3 v − 3 u 2 v 4 + 7 u 2 v 3 − 8 u 2 v 2 + 4 u 2 v − u 2 − u v 5 + 4 u v 4 − 8 u v 3 + 7 u v 2 − 3 u v − v 4 + 3 v 3 − 3 v 2 u 3 / 2 v 5 / 2 {\displaystyle {\frac {-3u^{3}v^{3}+3u^{3}v^{2}-u^{3}v-3u^{2}v^{4}+7u^{2}v^{3}-8u^{2}v^{2}+4u^{2}v-u^{2}-uv^{5}+4uv^{4}-8uv^{3}+7uv^{2}-3uv-v^{4}+3v^{3}-3v^{2}}{u^{3/2}v^{5/2}}}}
