$\lim_{x\to0}\left(\frac{x}{2x+1}\right)^{\frac{1}{\left(x-1\right)}}$

$4>3x+5$

$2^{10}\cdot2^{-6}$

$bc\left(m+10\right)-5\left(10+m\right)$

$\lim_{x\to0}\left(\frac{ln\:\cos\left(x\right)}{ln\:tank\left(x\right)}\right)$

$\frac{dy}{dx}=\frac{x+3}{\sqrt{x}}$

$\left(4z+3\right)+\left(z+8\right)$