\[ -3 y'(x)^2+4 y(x) y''(x)+4 y(x)=0 \] ✓ Mathematica : cpu = 0.210291 (sec), leaf count = 43
\[\left \{\left \{y(x)\to \frac {\left (c_1{}^2 x^2+2 c_2 c_1{}^2 x-64+c_2{}^2 c_1{}^2\right ){}^2}{256 c_1{}^2}\right \}\right \}\] ✓ Maple : cpu = 0.538 (sec), leaf count = 67
\[ \left \{ -4\,{\frac {\sqrt {{\it \_C1}\, \left ( y \left ( x \right ) \right ) ^{3/2}+4\,y \left ( x \right ) }}{\sqrt {y \left ( x \right ) }{\it \_C1}}}-x-{\it \_C2}=0,4\,{\frac {\sqrt {{\it \_C1}\, \left ( y \left ( x \right ) \right ) ^{3/2}+4\,y \left ( x \right ) }}{\sqrt {y \left ( x \right ) }{\it \_C1}}}-x-{\it \_C2}=0,y \left ( x \right ) =0 \right \} \]