\[ x^3 y^{(3)}(x)-4 x^2 y''(x)+\left (x^2+8\right ) x y'(x)-2 \left (x^2+4\right ) y(x)=0 \] ✓ Mathematica : cpu = 0.0718615 (sec), leaf count = 25
\[\left \{\left \{y(x)\to c_1 x^2+c_3 x \cos (x)-c_2 x \sin (x)\right \}\right \}\] ✓ Maple : cpu = 0.149 (sec), leaf count = 18
\[y \relax (x ) = x \left (\cos \relax (x ) c_{3}+\sin \relax (x ) c_{2}+c_{1} x \right )\]