− 2 u v 5 − 5 u v 4 + 8 u v 3 − 9 u v 2 + 7 u v − 2 u − 2 v 5 + 7 v 4 − 9 v 3 + 8 v 2 − 5 v + 2 u v 5 / 2 {\displaystyle -{\frac {2uv^{5}-5uv^{4}+8uv^{3}-9uv^{2}+7uv-2u-2v^{5}+7v^{4}-9v^{3}+8v^{2}-5v+2}{{\sqrt {u}}v^{5/2}}}}
