$\lim_{t\to2}\frac{e^t-1}{t}+\frac{1-\cos t}{t}$
$-34+-25+-9+488$
$\int5x^2e^{-2x}dx$
$-3x+2x-x+4x-x+2x-x+4x$
$4x^2\:+\:\:24x\:+\:49$
$2m^{2\:}+3m-4$
$\int xe^{-3-3x}dx$
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