$+\:102\:-\:118\:-\:49\:+\:9\:-\:18\:-\:23\:+\:29\:-\:38\:$
$2x\le3x-1$
$4\left(x^2-x+2\right)-5\left(x^2-2x+1\right)$
$3\cos\theta-1=0$
$100\left(15x\right)$
$2cos^{\left(2\right)}\theta\:-cos\theta\:=1$
$\int\frac{x^2}{x^2-7}dx$
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