\[ y'(x)=\left (y(x)-e^x\right )^2+e^x \] ✓ Mathematica : cpu = 0.175138 (sec), leaf count = 17
\[\left \{\left \{y(x)\to e^x+\frac {1}{-x+c_1}\right \}\right \}\] ✓ Maple : cpu = 0.099 (sec), leaf count = 14
\[ \left \{ y \left ( x \right ) ={{\rm e}^{x}}+ \left ( -x+{\it \_C1} \right ) ^{-1} \right \} \]