2 u v 3 − 9 u v 2 + 12 u v − 6 u − 6 v 3 + 12 v 2 − 9 v + 2 u v 3 / 2 {\displaystyle {\frac {2uv^{3}-9uv^{2}+12uv-6u-6v^{3}+12v^{2}-9v+2}{{\sqrt {u}}v^{3/2}}}}
