$-2x+5>3-x$
$\:t\left(x\right)=9\:ln\:x+7$
$5\:-\:2\:+\:r$
$\lim_{x\to0}\left(\frac{4x^2}{1-\cos^2\left(x\right)}\right)$
$\sqrt{2x-8=4}$
$x-7\ge1$
$54x^4\cdot y-16x y^4$
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