\[ 3 y(x) y''(x)-5 y'(x)^2=0 \] ✓ Mathematica : cpu = 0.0266804 (sec), leaf count = 20
\[\left \{\left \{y(x)\to \frac {c_2}{\left (3 c_1+2 x\right ){}^{3/2}}\right \}\right \}\] ✓ Maple : cpu = 0.023 (sec), leaf count = 17
\[ \left \{ -{\frac {3}{2} \left ( y \left ( x \right ) \right ) ^{-{\frac {2}{3}}}}-{\it \_C1}\,x-{\it \_C2}=0 \right \} \]