\[ -x^4+x^2 y''(x)+x^2-4 x y'(x)+6 y(x)=0 \] ✓ Mathematica : cpu = 0.0212288 (sec), leaf count = 30
\[\left \{\left \{y(x)\to \frac {1}{2} x^2 \left (2 c_2 x+2 c_1+x^2+2 \log (x)+2\right )\right \}\right \}\]
✓ Maple : cpu = 0.027 (sec), leaf count = 25
\[ \left \{ y \left ( x \right ) ={\frac {{x}^{2} \left ( 2\,x{\it \_C1}+{x}^{2}+2\,\ln \left ( x \right ) +2\,{\it \_C2}+2 \right ) }{2}} \right \} \]