$-7\left(-4\:-\:2\:+\:3\right)$
$9m^{4}+54n+81n^{2}$
$x\:+\:\left(x\:+\:1\right)\:=\:229$
$\frac{dy}{dt}=\frac{2\cdot y}{t}+t^2e^t$
$\int e^{-2x}\sin\left(\frac{x}{4}\right)dx$
$\frac{3x^3\:+\:5x^2\:+\:2x\:+\:3}{3x\:+\:2}$
$4a+28$
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