$y^''+\:4y^'+\:2y=\:0$
$-3,109-1,455$
$\frac{d^2}{dx^2}\left(4-x^4-x^3\right)$
$3x^2+13x-10=0$
$2x>4x+2$
$2-3x=14$
$\int\frac{x^3}{\sqrt{x^2+2x+5}}dx$
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