$\lim\:_{x\to\:0}\left(\frac{\ln\left(x+2\right)}{\sin\left(x\right)}\right)$

$log2\left(32\right)=5$

$e x^2 x^2$

$\left(3+\sqrt{6}\right)\left(3-\sqrt{6}\right)$

$\frac{d}{dx}\left(\arctan\left(\frac{2+x}{1-2x}\right)\right)$

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

$\lim_{x\to\infty}\left(x^4-8\cdot x^2+7\right)$