$\:\left(x-7\right)\left(x+3\right)\:\ge\:0$
$\left(\sqrt{3}\:-x\right)\left(x+\sqrt{3}\right)$
$\frac{4x^2+26x+32}{x-5}$
$\int mn3xdx$
$10x-2xy$
$8n^2-7n=-7$
$\int10x^3dx$
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