$x^2+10x+27\le0$
$12x^2+23x+5$
$\frac{d}{dx}\left(y=\left(1+\frac{1}{x}\right)^x\right)$
$x^2-24x+30$
$\left(3x^5+4\right)^2$
$\left(2b^2y-x^3\right)^4$
$\left(3x^4-7x+4\right)^2$
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