$\lim_{x\to\pi}\left(\frac{\csc\left(x\right)}{\csc\left(3x\right)}\right)$
$\frac{d}{dy}\left(\frac{1}{t\left(y^2+y\right)}\right)$
$\frac{x^2+6x}{x+2}$
$\sqrt[3]{z^2}$
$-\left(x-y\right)$
$m^2+4m+12m$
$8\:\cdot42$
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