$\lim_{x\to0}\left(\frac{1}{\left(x-1\right)}-\frac{1}{ln\left(x\right)}\right)$

$\left(3x-4\right)\left(2x+3\right)$

$\int\:\frac{ln^8\left(x\right)}{x}dx$

$\left(\frac{y}{y^2+2}\right)dy=\left(\frac{x}{x^2+4}\right)dx$

$-\left(-1\right)+\left(-52\right)-4-\left(-21\right)$

$\frac{x-2}{-2}6$

$-16x^2-48x+36$