$f\left(x\right)=\frac{0^2-4}{0-2}$
$6a+12b+24c$
$4\left(\frac{x}{8}-2\right)=\frac{1}{4}\left(2x-7\right)$
$\left|8\right|=-8$
$2x^2+10x=5$
$a^9-1-a-1$
$-7\:.\:64$
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