\[ x^3 y'(x)-x^2 y(x)-y(x)^2=0 \] ✓ Mathematica : cpu = 0.0959222 (sec), leaf count = 17
\[\left \{\left \{y(x)\to \frac {x^2}{1+c_1 x}\right \}\right \}\] ✓ Maple : cpu = 0.013 (sec), leaf count = 15
\[\left \{y \left (x \right ) = \frac {x^{2}}{c_{1} x +1}\right \}\]