$\lim_{x\to2}\left(\frac{\tan\left(x\right)}{x-2}\right)$

$\frac{dy}{dx}-x^{-1}y=x^2$

$\int\left(1+\tan\left(x\right)\right)^4\sec^2\left(x\right)dx$

$\left(w^8\right)^7$

$x\:+\:.25\:+\:5\:+\:2$

$\int\frac{1-x}{\left(x^3+x^4\right)}dx$

$\left(r^5+5\right).\left(r^5-5\right)$