$3x^{-2x}$
$x^2+8x+17>0$
$\frac{m^2-6m+9}{m^2-m-6}\cdot\frac{m^2+2m}{m^2+2m-15}$
$14\:-\:\left(-7\right)\:$
$\left(8m+7a\right)\left(-4m^2+3a\right)$
$\lim_{x\to-2}\left(\frac{x+2}{x^2-3x+1}\right)$
$z^{12}y^6-64z^3$
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