Question

(1+х2)у/+у(1+х2)-ху=0

Answer 1

$\frac{y(1+х^2)}{+у(1+х^2)-хy}$ = 0
$$- x y + \frac{y}{y} \left(x^{2} + 1\right) \left(x^{2} + 1\right) = 0$$