$4-16-1+8$
$\lim_{x\to1}\left(\frac{\ln\left(x\right)}{12x-x^2-1}\right)$
$\sqrt{40+3.3}$
$\left(sen^4x\right)^{e^{2x}}$
$2x-2>-3x$
$\lim_{x\to1.001}\left(\frac{1-\cos\left(x\right)}{x}\right)$
$\int_0^{2\pi}\:\left(cos\left(2x\right)\right)dx$
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