$\sqrt{1^2+\left(\frac{1}{x}\right)^2}$
$27a^3-123b^2$
$100-45g^2+g^4$
$a^2+60a+225$
$3x+2\le-5+8x$
$\lim_{h\to0}\left(\frac{sin^2h-h^2}{h^3}\right)$
$\frac{dy}{dx}\left(3x+3y=-5x^3-4y\right)$
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