\[ \boxed { axy \left ( x \right ) \left ( {\frac {\rm d}{{\rm d}x}}y \left ( x \right ) \right ) ^{2}- \left ( a \left ( y \left ( x \right ) \right ) ^{2}+b{x}^{2}+c \right ) {\frac {\rm d}{{\rm d}x}}y \left ( x \right ) +bxy \left ( x \right ) =0} \]
Mathematica: cpu = 0 (sec), leaf count = 0 \[ \text {Hanged} \]
Maple: cpu = 0 (sec), leaf count = 0 \[ \text {hanged} \]