\[ (-20 x-30) \left (x^2+3 x\right )^{7/3}+x (x+3) y''(x)+(3 x-1) y'(x)+y(x)=0 \] ✓ Mathematica : cpu = 0.37 (sec), leaf count = 276
\[\left \{\left \{y(x)\to \frac {4 x^{4/3} \int _1^x\left (45 \sqrt [3]{3} \, _2F_1\left (-\frac {4}{3},-\frac {4}{3};-\frac {1}{3};-\frac {K[1]}{3}\right ) \sqrt [3]{K[1] (K[1]+3)} K[1]^{11/3}+\frac {675}{2} \sqrt [3]{3} \, _2F_1\left (-\frac {4}{3},-\frac {4}{3};-\frac {1}{3};-\frac {K[1]}{3}\right ) \sqrt [3]{K[1] (K[1]+3)} K[1]^{8/3}+810 \sqrt [3]{3} \, _2F_1\left (-\frac {4}{3},-\frac {4}{3};-\frac {1}{3};-\frac {K[1]}{3}\right ) \sqrt [3]{K[1] (K[1]+3)} K[1]^{5/3}+\frac {1215}{2} \sqrt [3]{3} \, _2F_1\left (-\frac {4}{3},-\frac {4}{3};-\frac {1}{3};-\frac {K[1]}{3}\right ) \sqrt [3]{K[1] (K[1]+3)} K[1]^{2/3}\right )dK[1]-27 \sqrt [3]{3} (x (x+3))^{10/3} \, _2F_1\left (-\frac {4}{3},-\frac {4}{3};-\frac {1}{3};-\frac {x}{3}\right )}{4 (x+3)^{7/3}}-\frac {9 \sqrt [3]{3} c_2 \, _2F_1\left (-\frac {4}{3},-\frac {4}{3};-\frac {1}{3};-\frac {x}{3}\right )}{4 (x+3)^{7/3}}+\frac {c_1 x^{4/3}}{(x+3)^{7/3}}\right \}\right \}\] ✓ Maple : cpu = 0.065 (sec), leaf count = 52
\[y \relax (x ) = \frac {\left (c_{2}+\int \frac {\left (c_{1}+3 \left (x^{2}+3 x \right )^{\frac {7}{3}} x \left (x +3\right )\right ) \left (x +3\right )^{\frac {7}{3}}}{x^{\frac {4}{3}} \left (x^{2}+3 x \right )}d x \right ) x^{\frac {4}{3}}}{\left (x +3\right )^{\frac {7}{3}}}\]