\[ \boxed { {\frac {\rm d}{{\rm d}x}}y \left ( x \right ) -{\it f3} \left ( x \right ) \left ( y \left ( x \right ) \right ) ^{3}-{\it f2} \left ( x \right ) \left ( y \left ( x \right ) \right ) ^{2}-{\it f1} \left ( x \right ) y \left ( x \right ) -{\it f0} \left ( x \right ) =0} \]
Mathematica: cpu = 125.836479 (sec), leaf count = 37 \[ \text {DSolve}\left [-\text {f0}(x)-\text {f1}(x) y(x)-\text {f2}(x) y(x)^2-\text {f3}(x) y(x)^3+y'(x)=0,y(x),x\right ] \]
Maple: cpu = 0.265 (sec), leaf count = 0 \[ \text {could not solve} \]
Sage: cpu = 0 (sec), leaf count = 0 \[ \text {Maxima was unable to solve this ODE} \]