− 2 u 2 v 3 − 5 u 2 v 2 + 4 u 2 v + 2 u v 4 − 7 u v 3 + 11 u v 2 − 7 u v + 2 u + 4 v 3 − 5 v 2 + 2 v u v 2 {\displaystyle -{\frac {2u^{2}v^{3}-5u^{2}v^{2}+4u^{2}v+2uv^{4}-7uv^{3}+11uv^{2}-7uv+2u+4v^{3}-5v^{2}+2v}{uv^{2}}}}
