$\left(2q^6\right)^3$
$-x-x+3x$
$2\sqrt{36\:}-\sqrt{64}$
$\left(-b\right)^4$
$-216b^3+1$
$\left(x^2+xy\right)\frac{dy}{dx}=xy-y^2$
$\lim_{x\to2}\left(\frac{x^3+x^2-4x-4}{x^3-x^2-x-2}\right)$
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