− u 2 v 6 − 3 u 2 v 5 + 5 u 2 v 4 − 5 u 2 v 3 + 3 u 2 v 2 + 3 u v 5 − 7 u v 4 + 9 u v 3 − 7 u v 2 + 3 u v + 3 v 4 − 5 v 3 + 5 v 2 − 3 v + 1 u v 3 {\displaystyle -{\frac {u^{2}v^{6}-3u^{2}v^{5}+5u^{2}v^{4}-5u^{2}v^{3}+3u^{2}v^{2}+3uv^{5}-7uv^{4}+9uv^{3}-7uv^{2}+3uv+3v^{4}-5v^{3}+5v^{2}-3v+1}{uv^{3}}}}
