$\lim_{x\to0}\left(\frac{e^x-e^{-x}}{sen^2\left(x\right)}\right)$
$\:-6\:\ge\:g\:+\:4$
$x\cdot\left(-3\right)=42$
$8sec\left(x\right)-10=-26$
$p^2-20p+100p$
$\int6x\sqrt{3x-2}dx$
$y = ( 2 + x ^ { 2 } ) ( x - y )$
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