Write in Exponential Form fourth root of x- fourth root of x^3

$\sqrt[4]{x} - \sqrt[4]{x^{3}}$

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt[4]{x}$ as $x^{\frac{1}{4}}$ .

$x^{\frac{1}{4}} - \sqrt[4]{x^{3}}$

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt[4]{x^{3}}$ as $x^{\frac{3}{4}}$ .

$x^{\frac{1}{4}} - x^{\frac{3}{4}}$