( v 2 − v + 1 ) ( u + v − 1 ) ( u v + 1 ) ( u v − u − v ) u 3 / 2 v 5 / 2 {\displaystyle {\frac {\left(v^{2}-v+1\right)(u+v-1)(uv+1)(uv-u-v)}{u^{3/2}v^{5/2}}}}
