\[ a y(x)^2+b x^2+x y'(x)-y(x)=0 \] ✓ Mathematica : cpu = 0.0275994 (sec), leaf count = 46
\[\left \{\left \{y(x)\to -\frac {\sqrt {b} x \tan \left (\sqrt {a} \sqrt {b} x-\sqrt {a} \sqrt {b} c_1\right )}{\sqrt {a}}\right \}\right \}\]
✓ Maple : cpu = 0.03 (sec), leaf count = 25
\[ \left \{ y \left ( x \right ) =-{\frac {x}{a}\tan \left ( \sqrt {ab} \left ( x+{\it \_C1} \right ) \right ) \sqrt {ab}} \right \} \]