\[
\boxed{
{\frac {\rm d}{{\rm d}x}}y \left( x \right) ={\frac {-x+1-2\,y \left( x \right) +3\,{x}^{2}-2\,{x}^{2}y \left( x \right) +2\,{x}^{4}+{x}^{3}-2\,{x}^{3}y \left( x \right) +2\,{x}^{5}}{{x}^{2}-y \left( x \right) }}=0}
\]