$-32-6x-14-8x$
$\cos\left(a\right)+\cos^2\left(a\right)$
$x-8+\frac{12}{x-6}\ge2-x+\frac{12}{x-6}$
$x^3y^3-2x^2y^4-4xy^5$
$5-x<2x+5$
$\frac{d}{dx}3x^4$
$16x^2+28x+12\:$
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