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