− 3 u 2 v 3 − 5 u 2 v 2 + 4 u 2 v − u 2 + 3 u v 4 − 8 u v 3 + 11 u v 2 − 8 u v + 3 u − v 4 + 4 v 3 − 5 v 2 + 3 v u v 2 {\displaystyle -{\frac {3u^{2}v^{3}-5u^{2}v^{2}+4u^{2}v-u^{2}+3uv^{4}-8uv^{3}+11uv^{2}-8uv+3u-v^{4}+4v^{3}-5v^{2}+3v}{uv^{2}}}}
