− 2 u 3 v 3 − 2 u 3 v 2 − 2 u 2 v 3 + 5 u 2 v 2 − 2 u 2 v − 2 u v 2 + 5 u v − 2 u − 2 v + 2 u 3 / 2 v 3 / 2 {\displaystyle -{\frac {2u^{3}v^{3}-2u^{3}v^{2}-2u^{2}v^{3}+5u^{2}v^{2}-2u^{2}v-2uv^{2}+5uv-2u-2v+2}{u^{3/2}v^{3/2}}}}
