$\lim_{x\to0}\left(\frac{\sqrt{x+2}-\sqrt{2}}{x}\right)$
$\sqrt{xy}\sqrt[5]{xy}$
$y^'^'+100y=sec10x$
$2r+3m^2-r+n-r$
$4^2-25^2$
$\frac{-28}{-1}$
$\left(2x^{\frac{3}{2}}\right)\left(4x\right)^{-\frac{1}{2}}$
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