$-\frac{1}{2}\left(-3b+10\right)$
$\int\frac{arctan\left(2x\right)}{x}dx$
$1x-1y$
$3256\:centenas$
$\frac{x^3-4x^2+6x-24}{x-2}$
$\frac{dy}{dx}+3y^2\:=0$
$\cos\left(v+u\right)$
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