\[ \boxed { {\frac {\rm d}{{\rm d}x}}y \left ( x \right ) = \left ( y \left ( x \right ) -{{\rm e}^{x}} \right ) ^{2}+{{\rm e}^{x}}=0} \]
Mathematica: cpu = 0.017002 (sec), leaf count = 17 \[ \left \{\left \{y(x)\to \frac {1}{c_1-x}+e^x\right \}\right \} \]
Maple: cpu = 0.094 (sec), leaf count = 14 \[ \left \{ y \left ( x \right ) ={{\rm e}^{x}}+ \left ( {\it \_C1}-x \right ) ^{-1} \right \} \]