$\int e^{1-t}dt$
$5-3x\ge1$
$a=2a+4ba-5c$
$x^2-2x-63=0$
$\int\frac{x^3+1}{\left(x+2\right)\left(x+1\right)^2}dx$
$\left(x-5\right)\left(x+4\right)\ge0$
$\left(\frac{72}{4}\right)\:\left(-3\right)$
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