u v 5 − 5 u v 4 + 12 u v 3 − 16 u v 2 + 9 u v − 2 u − 2 v 5 + 9 v 4 − 16 v 3 + 12 v 2 − 5 v + 1 u v 5 / 2 {\displaystyle {\frac {uv^{5}-5uv^{4}+12uv^{3}-16uv^{2}+9uv-2u-2v^{5}+9v^{4}-16v^{3}+12v^{2}-5v+1}{{\sqrt {u}}v^{5/2}}}}