$\left(7x^{\frac{2}{3}}\left(x y^{121\left(-1\right)}\right)^{\frac{1}{2}}\right)^4$
$\left(1\left(81\right)\left(-1\right)\right)^{\frac{1}{4}}$
$\left(x^{15} y^{20} z^{25}\right)^{\frac{1}{3}}$
$\left(\left(\frac{x^a}{x}\right)^{2a}\left(\left(x^{121\left(-1\right)}\right)^a\right)^2\right)^{\frac{1}{a}}$
$\left(81a^{12} b^{24}\right)^{\frac{1}{4}}$
$\sqrt{2\cdot 2\sqrt{5-3\sqrt{20}}}$
$\left(\left(-1\right)\cdot \frac{27}{64}\right)^{\frac{1}{3}}$
Power of a product
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