$sen\:\frac{x}{3}\:cos\:\frac{x}{3}$
$5.77\cdot3$
$5\:x\:\left(-2\right)^3$
$-a-\left(-8a+7\right)$
$\lim_{q\to3}\left(\frac{3q^2-12q+14}{2q-6}\right)$
$1\:\:0\:\:\:-12\:\:\:\:\:\:\:16\:$
$4.142\cdot3.2$
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