$-3\left(-1\right)\left(4\left(2\right)\right)$
$\left(a^2-a-1\right)\left(a^2-a+1\right)$
$\frac{4a^4b^{-3}}{ba^{-3}}$
$\sqrt[4]{5^2}\cdot\sqrt{5}$
$\frac{1}{64}m^{12}+12^5$
$\frac{n}{9}^2+2mn+9m^2$
$\frac{-20x^2-19+4x+16x^4}{-2x^2+4}$
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