Write with Rational (Fractional) Exponents 3x square root of 5

$3 x \sqrt{5}$

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt{5}$ as $5^{\frac{1}{2}}$ .

$3 x \cdot 5^{\frac{1}{2}}$

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