$0\:-\left(-22\right)$

$y\left(s\right)=\frac{4s-2}{\left(s-1\right)^2\left(s-2\right)\left(s+1\right)}$

$\frac{d}{dx}\left(\log_e\left(\frac{9}{2}\right)\right)$

$x^2-4-36$

$\lim_{x\to-2}\left(\frac{-8+3x^2+2x}{x+2}\right)$

$2x^2-5x+7$

$\lim_{x\to0}\left(\frac{\left(3sec\left(\pi+x\right)-3sec\pi\right)}{x^2}\right)$