\[ 8 x y'(x)^3-12 y(x) y'(x)^2+9 y(x)=0 \] ✓ Mathematica : cpu = 0.0457137 (sec), leaf count = 49
\[\left \{\left \{y(x)\to -\frac {(x+3 c_1){}^{3/2}}{3 \sqrt {c_1}}\right \},\left \{y(x)\to \frac {(x+3 c_1){}^{3/2}}{3 \sqrt {c_1}}\right \}\right \}\] ✓ Maple : cpu = 0.056 (sec), leaf count = 51
\[y \relax (x ) = -\frac {3 x}{2}\]