$\frac{5\pi}{10}+\frac{4\sqrt{6}}{10}$

$\frac{3}{7}^{-6}\frac{7}{3}^{-5}$

$\int\frac{\left(\sec^2\left(x\right)\right)}{1+\tan\left(x\right)}dx$

$\frac{x+6}{x^2\left(x+1\right)}$

$f\left(x\right)=\frac{1}{\left(x^2+2\right)^2}$

$\frac{7}{8}\times\frac{11}{\frac{9}{x}}$

$7^4+4^2+7+2\:+\:6^3+8+3\:\:$