$n^2-n+42$
$3x\:+\:2\:\:<\:5$
$-10pq-4p+4pq-2p+12pq$
$-7\cdot2\cdot1\cdot8$
$6+x>-x+6$
$\lim_{x\to1}\left(\frac{\sqrt{x^2+2x-3}}{x+8}\right)$
$\left(5^{\frac{1}{2}}\right)^{-3}$
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