− 2 u v 5 − 6 u v 4 + 10 u v 3 − 9 u v 2 + 6 u v − 2 u − 2 v 5 + 6 v 4 − 9 v 3 + 10 v 2 − 6 v + 2 u v 5 / 2 {\displaystyle -{\frac {2uv^{5}-6uv^{4}+10uv^{3}-9uv^{2}+6uv-2u-2v^{5}+6v^{4}-9v^{3}+10v^{2}-6v+2}{{\sqrt {u}}v^{5/2}}}}