\[ y'(x)=\left (y(x)-e^x\right )^2+e^x \] ✓ Mathematica : cpu = 0.23995 (sec), leaf count = 17
\[\left \{\left \{y(x)\to e^x+\frac {1}{-x+c_1}\right \}\right \}\] ✓ Maple : cpu = 0.144 (sec), leaf count = 14
\[\left \{y \left (x \right ) = {\mathrm e}^{x}+\frac {1}{c_{1}-x}\right \}\]