$f\left(x\right)=\:\frac{2x+4}{x-2}$
$3x-1>5+2x$
$\lim_{x\to\pi\frac{\pi}{2}}\left(\sec\left(3x\right)\cos\left(5x\right)\right)$
$\int\left(-sin\left(\pi x\right)\right)dx$
$\left(-4n\:+\:b\right)\:\left(4n\:+\:b\right)\:$
$5w+3w-2w$
$\frac{3^{15}}{3^5\cdot3^7}$
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