$x^2-3x-16$
$x^6-x^3+\frac{2}{4}$
$cos^2x-cos^4x=\frac{1-cos4x}{8}$
$4x^2+36xy$
$9x^6y^6-6x^3y^3z^3+z^6$
$343\cdot8$
$\frac{x}{2}-\frac{1}{3}<\frac{2}{3}-\frac{x}{2}$
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