$\lim_{x\to0}\left(\frac{e^x-1}{x^2}\right)$
$32-\frac{32}{9}v$
$-35+33-28-40$
$cos\left(x-y\right)sinx-sin\left(x-y\right)cosx-siny$
$\frac{d}{dx}2e^{-2x}+\frac{1}{3}e^x$
$\int\left(4x-4\right)^4dx$
$204+15$
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