Question

$\sqrt[4]{?}a = 3$
qual o valor de a​

Answer 1

$\Large\boxed{\begin{array}{l}\sf\sqrt[\sf4]{\sf a}=3\\\sf(\sqrt[\sf\backslash\!\!\!4]{\sf a})^{\backslash\!\!\!4}=3^4\\\sf a=81\end{array}}$