$nvauyv$
$\lim_{x\to\infty}\left(\frac{x^2}{\sqrt{x^2-1}}-x\right)$
$\sqrt[3]{x^6z^9w^{12}}$
$\frac{m^{12}+1}{m^4+1}$
$x=\frac{2x}{x+y}$
$3\cot^2y+10\cot y+3$
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