$\left(ax^{-\frac{1}{2}}+xa^{-\frac{1}{2}}\right)^n$
$\frac{-x}{4}-4\le\frac{5x}{3}-\frac{1}{6}$
$\left(\frac{2}{3}y-\frac{1}{5}z\right)^2$
$-x^2-4x+8\:<\:0$
$8-3\left(4-9\:x\right)$
$\frac{3}{\sqrt{x}}-\frac{x\sqrt{x}}{4}$
$\frac{d}{dx}+2y=2e^{-x}sinx$
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