$\frac{d}{dx}\arcsec\frac{3-x}{x}$
$x^2+82x-9$
$\left(2m-4m\right)^2$
$\int x^3\sqrt{3x-2}dx$
$\left(3x^2+5^3\right)$
$2x+3x^2-\left(2x+x^2\right)$
$2^{2x}-2^x-2=0$
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