− ( w − 1 ) ( x − 1 ) ( − 2 u v x + u v + u x + v x + x 2 − 2 x ) u v w x 3 / 2 {\displaystyle -{\frac {(w-1)(x-1)\left(-2uvx+uv+ux+vx+x^{2}-2x\right)}{{\sqrt {u}}{\sqrt {v}}{\sqrt {w}}x^{3/2}}}}
