$2\sec\left(x\right)+1=\sec\left(x\right)+3$
$\frac{dy}{dx}+ax=b$
$x^3+3x^2+3x+1\left(x+3\right)$
$y'-3y=xy^{\left(-4\right)}$
$\lim_{x\to-7}\left(\frac{x^2+6x+21}{x+7}\right)$
$\sqrt{8}\cdot\sqrt{6}\cdot\sqrt{3}$
$\sqrt{2}0\:+13\sqrt{4}5\:+\:2\sqrt{1}25$
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