\[ x^3 y'(x)-x^2 y(x)-y(x)^2=0 \] ✓ Mathematica : cpu = 0.0103329 (sec), leaf count = 17
\[\left \{\left \{y(x)\to \frac {x^2}{c_1 x+1}\right \}\right \}\]
✓ Maple : cpu = 0.016 (sec), leaf count = 15
\[ \left \{ y \left ( x \right ) ={\frac {{x}^{2}}{{\it \_C1}\,x+1}} \right \} \]