Simplify $\sqrt{\sqrt{a}}$ using the power of a power property: $\left(a^m\right)^n=a^{m\cdot n}$. In the expression, $m$ equals $\frac{1}{2}$ and $n$ equals $\frac{1}{2}$

Applicare la formula: $x\cdot x$$=x^2$, dove $x=\frac{1}{2}$

Applicare la formula: $\left(\frac{a}{b}\right)^n$$=\frac{a^n}{b^n}$, dove $a=1$, $b=2$ e $n=2$

Applicare la formula: $a^b$$=a^b$, dove $a=2$, $b=2$ e $a^b=2^2$