\[ \left (y(x)-x^2\right ) y'(x)-x=0 \] ✓ Mathematica : cpu = 0.0263249 (sec), leaf count = 29
\[\left \{\left \{y(x)\to x^2+\frac {1}{2} \left (1+W\left (-e^{-2 x^2-1+c_1}\right )\right )\right \}\right \}\] ✓ Maple : cpu = 0.037 (sec), leaf count = 23
\[y \relax (x ) = x^{2}+\frac {\LambertW \left (-4 c_{1} {\mathrm e}^{-2 x^{2}-1}\right )}{2}+\frac {1}{2}\]