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