$12x+12=16x+8$
$\sqrt[2]{36x^4}y^{10}z^7$
$\lim_{x\to-1}x^3+2x^2-3x-4$
$cos\:a\:\left(1-sin\:a\right)\left(1+sin\:a\right)$
$\left(\:-\:42\:\right)\::\:\left(\:-\:7\:\right)\:$
$4\left\{x^2-2\left[x+3\left(x-1\right)\right]\right\}$
$250+14.8+3.95$
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