Question

Square root

Answer 1

Hopefully you've learned that "square root of x" means \[\Large \sqrt{x}\] that's the mathmetical notation way to write it

Answer 2

later on you'll learn that fractional exponents represent radicals and roots

so

\[\LARGE \sqrt{x} = x^{{}^\frac{1}{2}}\]

\[\LARGE \sqrt[3]{x} = x^{{}^\frac{1}{3}}\]

\[\LARGE \sqrt[4]{x} = x^{{}^\frac{1}{4}}\]

\[\LARGE \sqrt[n]{x} = x^{{}^\frac{1}{n}}\]

where n is any integer