Question

$$\sqrt{\sqrt[3]{729}}$$

Answer

$$3^(1/1458)$$

Solution


Use this rule: \({({x}^{a})}^{b}={x}^{ab}\).
\[{3}^{\frac{1\times 1}{729\times 2}}\]
Simplify  \(1\times 1\)  to  \(1\).
\[\sqrt[729\times 2]{3}\]
Simplify  \(729\times 2\)  to  \(1458\).
\[\sqrt[1458]{3}\]

Decimal Form: 1.000754