$\lim_{x\to a}\left(\frac{\sqrt[3]{x}-\sqrt[3]{9}}{x^2-a^2}\right)$
$x^2+6x+5\le0$
$3x^2\:+\:3mx\:+\:3x^2\:+\:3mx$
$-0.1\cdot72.3$
$22x-12y+3y-7x$
$x^4+y^9=\:46$
$\frac{d}{dx}\sqrt{y-2x^3}-9y^2+6x=y^3$
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