$3x^2-21x+32$
$\left(\frac{1}{2}m+10n\right)^3$
$10x^2y^5\:15x^3$
$\frac{1}{x^2}+\frac{2}{x^3}+\frac{2}{x}$
$\frac{3}{x^2-2x+1}$
$\lim_{x\to\infty}\left(\frac{20x}{20x+1}\right)^{4x}$
$5\tan\left(x\right)\cos\left(x\right)+2=3\sin\left(x\right)+3$
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