\[ x^2 y'(x)-x^2-x y(x)-y(x)^2=0 \] ✓ Mathematica : cpu = 0.0148044 (sec), leaf count = 13
\[\left \{\left \{y(x)\to x \tan \left (c_1+\log (x)\right )\right \}\right \}\] ✓ Maple : cpu = 0.043 (sec), leaf count = 11
\[ \left \{ y \left ( x \right ) =\tan \left ( \ln \left ( x \right ) +{\it \_C1} \right ) x \right \} \]