$\lim_{x\to4}\left(\frac{x^2-x-6}{x-2}\right)$
$2sin3\theta\:=1$
$\frac{d}{dx}\:csc\:8x$
$4m^4.m$
$9b^2-30b+25$
$\int_0^3\left(\frac{x-1}{x^2+3x+4}\right)dx$
$\int\left(\frac{3x+2}{2x-1}\right)dx$
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