$\frac{d}{dx}\:\frac{2}{3}x^2cosx-\frac{3}{x}$
$2\left(x^2+9\right)$
$\int\left(\frac{e^{-x}}{1-e^{-x}}\right)dx$
$4x+8y$
$\left(1+y\right)dx+\left(xy\right)dy=0$
$x^2-36x+120$
$\left(23\right)-25-16\left(-2\right)-10$
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