\[ \int \frac {\left (-3+x^4\right ) \left (1+x^4\right )^{2/3} \left (1+x^3+x^4\right )}{x^6 \left (1-x^3+x^4\right )} \, dx \]
Optimal antiderivative \[ \frac {3 \left (x^{4}+1\right )^{\frac {2}{3}} \left (x^{4}+5 x^{3}+1\right )}{5 x^{5}}-2 \sqrt {3}\, \arctan \left (\frac {\sqrt {3}\, x}{x +2 \left (x^{4}+1\right )^{\frac {1}{3}}}\right )+2 \ln \left (-x +\left (x^{4}+1\right )^{\frac {1}{3}}\right )-\ln \left (x^{2}+x \left (x^{4}+1\right )^{\frac {1}{3}}+\left (x^{4}+1\right )^{\frac {2}{3}}\right ) \]
command
Integrate[((-3 + x^4)*(1 + x^4)^(2/3)*(1 + x^3 + x^4))/(x^6*(1 - x^3 + x^4)),x]
Mathematica 13.1 output
\[ \frac {3 \left (1+x^4\right )^{2/3} \left (1+5 x^3+x^4\right )}{5 x^5}-2 \sqrt {3} \text {ArcTan}\left (\frac {\sqrt {3} x}{x+2 \sqrt [3]{1+x^4}}\right )+2 \log \left (-x+\sqrt [3]{1+x^4}\right )-\log \left (x^2+x \sqrt [3]{1+x^4}+\left (1+x^4\right )^{2/3}\right ) \]
Mathematica 12.3 output
\[ \int \frac {\left (-3+x^4\right ) \left (1+x^4\right )^{2/3} \left (1+x^3+x^4\right )}{x^6 \left (1-x^3+x^4\right )} \, dx \]________________________________________________________________________________________