\[ 2 y(x) y''(x)-y'(x)^2-8 y(x)^3=0 \] ✓ Mathematica : cpu = 0.499096 (sec), leaf count = 77
\[\left \{\left \{y(x)\to -\frac {1}{2} i \sqrt {c_1} \text {ns}\left (\left .\left (-\frac {1}{2}+\frac {i}{2}\right ) \sqrt [4]{c_1} \left (x+c_2\right )\right |-1\right ){}^2\right \},\left \{y(x)\to -\frac {1}{2} i \sqrt {c_1} \text {ns}\left (\left .\left (-\frac {1}{2}+\frac {i}{2}\right ) \sqrt [4]{c_1} \left (x+c_2\right )\right |-1\right ){}^2\right \}\right \}\]
✓ Maple : cpu = 0.098 (sec), leaf count = 53
\[ \left \{ \int ^{y \left ( x \right ) }\!{\frac {1}{\sqrt {4\,{{\it \_a}}^{3}+{\it \_C1}\,{\it \_a}}}}{d{\it \_a}}-x-{\it \_C2}=0,\int ^{y \left ( x \right ) }\!-{\frac {1}{\sqrt {4\,{{\it \_a}}^{3}+{\it \_C1}\,{\it \_a}}}}{d{\it \_a}}-x-{\it \_C2}=0 \right \} \]