Write with Rational (Fractional) Exponents square root of 7^3* square root of 7

$\sqrt{7^{3}} \cdot \sqrt{7}$

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt{7^{3}}$ as $7^{\frac{3}{2}}$ .

$7^{\frac{3}{2}} \cdot \sqrt{7}$

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt{7}$ as $7^{\frac{1}{2}}$ .

$7^{\frac{3}{2}} \cdot 7^{\frac{1}{2}}$