$\int\frac{4+3x+2x^2}{x^3+4x}dx$
$-2x^3+7x^2-3x-12$
$\frac{x-1}{x-2}\ge2$
$\int e^{-1}dx$
$-\left(-1\right)-1$
$-2\left(2\right)\left(729\right)+16\left(8\right)\left(729\right)$
$28x^2y+7xy$
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