$4x^3-8x^2-4x+8$
$7x-2y-10x+5+8y$
$\lim_{x\to0}\left(\frac{e^{2x}-1}{e^x-1}\right)$
$12x^3+12x^2$
$\left(5m+5mn\right)^2$
$-14\left(-\frac{3}{7n\:}+6\right)$
$\left(1+5\right)^n$
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