\[ \int \frac {1}{\sqrt {3-4 x^2-2 x^4}} \, dx \]
Optimal antiderivative \[ \frac {\EllipticF \left (\frac {x \sqrt {2}}{\sqrt {-2+\sqrt {10}}}, \frac {i \sqrt {15}}{3}-\frac {i \sqrt {6}}{3}\right )}{\sqrt {2+\sqrt {10}}} \]
command
integrate(1/(-2*x^4-4*x^2+3)^(1/2),x, algorithm="fricas")
Fricas 1.3.8 (sbcl 2.2.11.debian) via sagemath 9.6 output
\[ \frac {1}{6} \, \sqrt {\sqrt {10} + 2} {\left (\sqrt {10} - 2\right )} {\rm ellipticF}\left (\frac {1}{3} \, \sqrt {3} x \sqrt {\sqrt {10} + 2}, \frac {2}{3} \, \sqrt {10} - \frac {7}{3}\right ) \]
Fricas 1.3.7 via sagemath 9.3 output
\[ {\rm integral}\left (-\frac {\sqrt {-2 \, x^{4} - 4 \, x^{2} + 3}}{2 \, x^{4} + 4 \, x^{2} - 3}, x\right ) \]