Write with Rational (Fractional) Exponents 12 root of y^16z^21

$\sqrt[12]{y^{16} z^{21}}$

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt[12]{y^{16} z^{21}}$ as ${(y^{16} z^{21})}^{\frac{1}{12}}$ .

${(y^{16} z^{21})}^{\frac{1}{12}}$