$2^3\cdot2$
$\lim_{x\to\infty}\:log\left(\frac{x+3}{x-2}\right)$
$\frac{x^2+2x+1}{2x-1}$
$7v+2+5-2v$
$2^3\cdot2^2\cdot2^{-4}$
$2x-1\ge0$
$8n+4n^2-8n$
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