$\lim_{x\to\pi}\left(\cos\left(x\right)\right)$
$4x^3-100x$
$\left(3-x\right)^4-14\:\left(3-x\right)^2+49$
$\frac{d}{dx}-3x^3+5x-2$
$0.0001\cdot\infty$
$\left(+4\right)+\left|\left(+3\right)+\left(7\right)\right|+\left(+1\right)$
$2n^3-8n^2+4n$
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