\[ \int \frac {(c e+d e x)^{7/2}}{\sqrt {1-c^2-2 c d x-d^2 x^2}} \, dx \]
Optimal antiderivative \[ \frac {10 e^{\frac {7}{2}} \EllipticF \left (\frac {\sqrt {d e x +c e}}{\sqrt {e}}, i\right )}{21 d}-\frac {2 e \left (d e x +c e \right )^{\frac {5}{2}} \sqrt {-d^{2} x^{2}-2 c d x -c^{2}+1}}{7 d}-\frac {10 e^{3} \sqrt {d e x +c e}\, \sqrt {-d^{2} x^{2}-2 c d x -c^{2}+1}}{21 d} \]
command
integrate((d*e*x+c*e)^(7/2)/(-d^2*x^2-2*c*d*x-c^2+1)^(1/2),x, algorithm="fricas")
Fricas 1.3.8 (sbcl 2.2.11.debian) via sagemath 9.6 output
\[ -\frac {2 \, {\left ({\left (3 \, d^{4} x^{2} + 6 \, c d^{3} x + {\left (3 \, c^{2} + 5\right )} d^{2}\right )} \sqrt {-d^{2} x^{2} - 2 \, c d x - c^{2} + 1} \sqrt {d x + c} e^{\frac {7}{2}} + 5 \, \sqrt {-d^{3} e} e^{3} {\rm weierstrassPInverse}\left (\frac {4}{d^{2}}, 0, \frac {d x + c}{d}\right )\right )}}{21 \, d^{3}} \]
Fricas 1.3.7 via sagemath 9.3 output
\[ {\rm integral}\left (-\frac {{\left (d^{3} e^{3} x^{3} + 3 \, c d^{2} e^{3} x^{2} + 3 \, c^{2} d e^{3} x + c^{3} e^{3}\right )} \sqrt {-d^{2} x^{2} - 2 \, c d x - c^{2} + 1} \sqrt {d e x + c e}}{d^{2} x^{2} + 2 \, c d x + c^{2} - 1}, x\right ) \]