$\left[-4-\left(-5\right)+5\right]-1$
$0.4x-0.2>0.6$
$\left(3+4+\right)\left(4+7\right)+4-9$
$\lim_{x\to0}\left(\frac{arctan\left(3x\right)}{ln\left(x\right)}\right)$
$\frac{1}{256}\int\left(1-sen^2x\right)cosx\:dx$
$x^2-5x-28$
$\frac{-4x^2}{x}$
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