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

$\int_{\frac{x}{2}}^{2\pi}3\cos\left(x\right)dx$

$\left(n\:+\:5\right)\left(n\:+1\right)$

$14m^2:7m$

$\frac{4a^2b^5}{-2ab}$

$\frac{tan\theta-cot\theta}{tan\theta+cot\theta}$

$\frac{\left(\csc\:^2\left(t\right)-1\right)}{\cot^2\left(t\right)}$