\[ \int \frac {x^2}{a+b (c+d x)^4} \, dx \]
Optimal antiderivative \[ -\frac {c \arctan \left (\frac {\left (d x +c \right )^{2} \sqrt {b}}{\sqrt {a}}\right )}{d^{3} \sqrt {a}\, \sqrt {b}}+\frac {\ln \left (-a^{\frac {1}{4}} b^{\frac {1}{4}} \left (d x +c \right ) \sqrt {2}+\sqrt {a}+\left (d x +c \right )^{2} \sqrt {b}\right ) \left (\sqrt {a}-\sqrt {b}\, c^{2}\right ) \sqrt {2}}{8 a^{\frac {3}{4}} b^{\frac {3}{4}} d^{3}}-\frac {\ln \left (a^{\frac {1}{4}} b^{\frac {1}{4}} \left (d x +c \right ) \sqrt {2}+\sqrt {a}+\left (d x +c \right )^{2} \sqrt {b}\right ) \left (\sqrt {a}-\sqrt {b}\, c^{2}\right ) \sqrt {2}}{8 a^{\frac {3}{4}} b^{\frac {3}{4}} d^{3}}+\frac {\arctan \left (-1+\frac {b^{\frac {1}{4}} \left (d x +c \right ) \sqrt {2}}{a^{\frac {1}{4}}}\right ) \left (\sqrt {a}+\sqrt {b}\, c^{2}\right ) \sqrt {2}}{4 a^{\frac {3}{4}} b^{\frac {3}{4}} d^{3}}+\frac {\arctan \left (1+\frac {b^{\frac {1}{4}} \left (d x +c \right ) \sqrt {2}}{a^{\frac {1}{4}}}\right ) \left (\sqrt {a}+\sqrt {b}\, c^{2}\right ) \sqrt {2}}{4 a^{\frac {3}{4}} b^{\frac {3}{4}} d^{3}} \]
command
integrate(x^2/(a+b*(d*x+c)^4),x, algorithm="fricas")
Fricas 1.3.8 (sbcl 2.2.11.debian) via sagemath 9.6 output
\[ \text {output too large to display} \]
Fricas 1.3.7 via sagemath 9.3 output \[ \text {Timed out} \]