$\frac{x_{-3}}{2}-\frac{x-2}{8}\le\frac{x}{2}$
$p^{2\:}+\:11p\:+\:30$
$5x^2-9x-1=0$
$2a^2-32$
$\frac{dy}{dx}\left(\frac{1}{11y^{10}}\right)$
$xy-9xy$
$x^2.x^{12}$
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