\[ y''(x)-y(x)^2=0 \] ✓ Mathematica : cpu = 0.0398476 (sec), leaf count = 26
\[\left \{\left \{y(x)\to \sqrt [3]{6} \wp \left (\frac {x+c_1}{\sqrt [3]{6}};0,c_2\right )\right \}\right \}\]
✓ Maple : cpu = 0.028 (sec), leaf count = 12
\[ \left \{ y \left ( x \right ) =6\,{\it WeierstrassP} \left ( x+{\it \_C1},0,{\it \_C2} \right ) \right \} \]