$\sqrt{\left(8t^2+\left[tsin\left(t\right)+2cos\left(t\right)\right]^2+\left[tcos\left(t\right)\right]^2\right)}$

$\frac{3x^2}{2x^5}$

$\int\sqrt{\frac{x^2}{x^3+x^2-x-1}}dx$

$\left(1-x^6\right)^4$

$93.1^{-n}\left|x-56.1\right|^n$

$\int\frac{3x^2-x+9}{\left(x^2+9\right)}dx$

$\left(2a\:-\:3\right)\:\left(2a\:-\:6\right)$