$s^3-1$
$5x^2+10xy^2$
$x+30>0$
$-68\:-7\:4$
$\left(x-6-y\right)\left(x-6+y\right)$
$-5-45-15+445+420$
$\frac{x^3-6x^2+15}{x-2}$
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