$5+2+3+1$

$2\left(\log\left(x+2\right)+2.5\left(\log\left(x+5\right)\right)\right)$

$\sqrt{x}\cdot\sqrt[4]{x^3}\cdot\sqrt[3]{x}$

$z^2-5z+5$

$\frac{\csc\infty-1}{\csc\infty+1}=\frac{1-\sin\infty}{1+\sin\infty}$

$\lim_{x\to3}\left(\frac{x-3}{x^2-5+6x}\right)$

$\left|\left(3x-y\right)-2x^2\right|\left|-3z\left(3x-y\right)\right|$