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