$\left(4mn-3n\right)^2$
$\lim_{x\to2}\frac{\left(x^2-x+6\right)}{x-2}$
$5a^2-2a+\:12$
$\sqrt[3]{27w^{21}}$
$\left(\sqrt{h^2+1}+1\:\:\right)\left(\sqrt{h^2+1}-1\right)$
$\left(4x+5\right)\left(x+3\right)$
$\frac{32^{-1}}{4^{-1}}$
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