\[ 4 y(x) y''(x)-3 y'(x)^2+4 y(x)=0 \] ✓ Mathematica : cpu = 0.227886 (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 = 0.962 (sec), leaf count = 67
\[y \relax (x ) = 0\]