− 5 u 2 v 3 − 8 u 2 v 2 + 5 u 2 v − u 2 + 3 u v 4 − 11 u v 3 + 17 u v 2 − 11 u v + 3 u − v 4 + 5 v 3 − 8 v 2 + 5 v u v 2 {\displaystyle -{\frac {5u^{2}v^{3}-8u^{2}v^{2}+5u^{2}v-u^{2}+3uv^{4}-11uv^{3}+17uv^{2}-11uv+3u-v^{4}+5v^{3}-8v^{2}+5v}{uv^{2}}}}
