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