\[ y'(x)=\frac {-a^2 x^3-2 a b x^2-4 a x y(x)-4 a x+8}{2 a x^2+4 b x+8 y(x)+8} \] ✓ Mathematica : cpu = 0.046064 (sec), leaf count = 46
\[\left \{\left \{y(x)\to \frac {1}{4} \left (-a x^2-2 b x-4\right )-\frac {2 \left (1+W\left (-e^{-\frac {b^2 x}{4}-1+c_1}\right )\right )}{b}\right \}\right \}\] ✓ Maple : cpu = 0.294 (sec), leaf count = 84
\[y \relax (x ) = \frac {-a \,x^{2} b -2 b^{2} x -4 b +4 \,{\mathrm e}^{\frac {-4 \LambertW \left (-\frac {{\mathrm e}^{-\frac {b^{2} x}{4}} {\mathrm e}^{-\frac {c_{1} b^{2}}{2 a}} {\mathrm e}^{-\frac {b}{2}} {\mathrm e}^{-1}}{2}\right ) a +\left (-b^{2} x -2 b -4\right ) a -2 c_{1} b^{2}}{4 a}}-8}{4 b}\]