− 2 u v 3 − 7 u v 2 + 10 u v − 4 u − 4 v 3 + 10 v 2 − 7 v + 2 u v 3 / 2 {\displaystyle -{\frac {2uv^{3}-7uv^{2}+10uv-4u-4v^{3}+10v^{2}-7v+2}{{\sqrt {u}}v^{3/2}}}}
