$\frac{12x^2-9x+4}{2x^2+3x-2}$

$\lim_{x\to\infty}\left(\frac{\left(x+\left(x\cdot sqrt\left(x\right)\right)\right)}{\left(4\cdot\:x\cdot\:\log\left(\left(x^2\right)+1\right)\right)}\right)$

$\left(5m-3n\right)\left(m^2-mn+n^2\right)$

$\frac{4}{x+3}>\:2$

$\int a^{-x}dx$

$15-4\cdot6-8$

$\int\frac{20x^2-60x+46}{\left(x+2\right)\left(2x-5\right)\left(x-1\right)}dx$