\[ 4 x^3 y'(x)-4 x^2 y(x)+9 y(x) y'(x)^2=0 \] ✗ Mathematica : cpu = 299.998 (sec), leaf count = 0 , timed out
$Aborted
✓ Maple : cpu = 0.304 (sec), leaf count = 87
\[ \left \{ y \left ( x \right ) =-{\frac {i}{3}}{x}^{2},y \left ( x \right ) ={\frac {i}{3}}{x}^{2},y \left ( x \right ) =-{\frac {1}{6}\sqrt {-4\,{\it \_C1}\,{x}^{2}+{{\it \_C1}}^{2}}},y \left ( x \right ) ={\frac {1}{6}\sqrt {-4\,{\it \_C1}\,{x}^{2}+{{\it \_C1}}^{2}}},y \left ( x \right ) =-2\,{\frac {\sqrt {{\it \_C1}\,{x}^{2}+9}}{{\it \_C1}}},y \left ( x \right ) =2\,{\frac {\sqrt {{\it \_C1}\,{x}^{2}+9}}{{\it \_C1}}} \right \} \]