u 3 ( − v 3 ) + 2 u 3 v 2 − u 3 v + 3 u 2 v 3 − 7 u 2 v 2 + 7 u 2 v − 2 u 2 − 2 u v 3 + 7 u v 2 − 7 u v + 3 u − v 2 + 2 v − 1 u 3 / 2 v 3 / 2 {\displaystyle {\frac {u^{3}\left(-v^{3}\right)+2u^{3}v^{2}-u^{3}v+3u^{2}v^{3}-7u^{2}v^{2}+7u^{2}v-2u^{2}-2uv^{3}+7uv^{2}-7uv+3u-v^{2}+2v-1}{u^{3/2}v^{3/2}}}}
