$\int\frac{\left(4x+5\right)}{\left(x^2+1\right)}dx$
$5x\:+\:7\:<\:2x\:+19$
$\frac{2x^3-2x^2+1}{x^2-x}$
$\frac{dy}{dx}+\frac{2}{250-x}y=1$
$20c^3+15c^2$
$\left(3-9y\right)\left(2-5y\right)$
$x^2+26x+26$
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