− 3 u 2 v 4 + 4 u 2 v 3 − 4 u 2 v 2 + 3 u 2 v − u 2 − 3 u v 5 + 6 u v 4 − 7 u v 3 + 6 u v 2 − 3 u v − v 6 + 3 v 5 − 4 v 4 + 4 v 3 − 3 v 2 u v 3 {\displaystyle {\frac {-3u^{2}v^{4}+4u^{2}v^{3}-4u^{2}v^{2}+3u^{2}v-u^{2}-3uv^{5}+6uv^{4}-7uv^{3}+6uv^{2}-3uv-v^{6}+3v^{5}-4v^{4}+4v^{3}-3v^{2}}{uv^{3}}}}
