u v w 2 x 2 − u v w 2 x − u w 2 x 2 + u w x 2 + v w − v − x + 1 u v w x {\displaystyle {\frac {uvw^{2}x^{2}-uvw^{2}x-uw^{2}x^{2}+uwx^{2}+vw-v-x+1}{{\sqrt {u}}{\sqrt {v}}wx}}}
