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

$12x^2-15x-18\ge0$

$\frac{dy}{dx}=\frac{\left(yx+x+3y+3\right)}{\left(yx+2x-y-2\right)}$

$\lim_{x\to\infty}\left(\frac{x+3}{x^2-3x+2}\right)$

$\lim\:_{x\to\:\pi\:}\left(\frac{sin\left(x-\frac{3\pi\:}{2}\right)}{1-\sqrt{cos\left(2x\right)}}\right)$

$\int\frac{3x-1}{\left(x+2\right)\left(x-4\right)}dx$

$2+\sqrt{x}-1$