$z^2-3z+2$

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

$\left(a^5b^8c^{10}\right)^3$

$y'-xy^2=2xy$

$\frac{\sec\left(x\right)^2}{\csc\left(x\right)^2}$

$\frac{x^6-b^6}{x+b}$

$\frac{\left(2^{-2}\right)^{-3}:\left(2^{-3}\right)^2}{\left(2^{-3}\right)^{-1}\cdot\left(2^{-1}\right)^{-2}}$