$\int\frac{6}{\sqrt{x^2-9}}dx$
$\lim_{x\to0}\left(\frac{sin3\pi}{2\pi x}\right)$
$\left(3m-5n+6\right)+\left(-6m+8-20n\right)+\left(20n+12m-12\right)$
$75\cdot15$
$\frac{dy}{dx}=\cos x$
$a-\frac{1}{a}=3$
$\left(z+v\right)^3$
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