$\frac{dy}{dx}=y^2+\frac{2y}{x}+\frac{2}{x^2}$
$-4x^2-8x+4$
$\int\left(2x+1\right)e^3xdx$
$\frac{4x^2-9y^2}{2x-3y}$
$\frac{dy}{dx}+50y=0$
$\frac{v+7}{10}>1$
$\left(5x^3-8x^2+2x=-3\right)\left(3x^2-5x+7\right)$
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