$\int\frac{3x}{x-2}dx$
$x^2+10x+27\ge0$
$\frac{x^5-x^48+x^2-2}{x^2+1}$
$x-15=-34$
$-2+-5+8+-3+-2u+-8$
$\left(\sqrt{x}^2-3^2\right)$
$5^{8+2}$
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