$\int\left(x^3+2x^2+1\right)e^{-3x}dx$
$36sec^4w-12sec^2w+1$
$3\left(-7\right)+6$
$\frac{x^4+3x^3+3x^2+3x+2}{x+2}$
$\left(+9\right)\:-\:\left(+7\right)\:-\:\left(-3\right)\:+\:\left(-2\right)\:-\:\left(-18\right)$
$-44-36-61$
$0.75+\frac{4.5}{\frac{2}{3}}$
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