u v 5 − 2 u v 4 − u v 3 + 2 u v 2 − u v − v 4 + 2 v 3 − v 2 − 2 v + 1 u v 5 / 2 {\displaystyle {\frac {uv^{5}-2uv^{4}-uv^{3}+2uv^{2}-uv-v^{4}+2v^{3}-v^{2}-2v+1}{{\sqrt {u}}v^{5/2}}}}
