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

$\ln\left(\frac{y+1}{y-1}\right)+\ln\left(\frac{y}{y+1}\right)-\ln\left(y^2+1\right)$

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

$2x^2-14x+24=0$

$\:4d+6+2d$

$\int\:\frac{x}{e^{2x}}dx$

$18x^2-18x+6=0$