Question

Hi to whoever is reading this. I really need help on breaking down the expression. I am doing this without a calculator and I don’t Know what steps to take to get the answer.

Answer 1

A

Explanation:

`81` is
`9^2` which happens to be
`(3^2)^2` or
`3^4`.

So
`\sqrt[4]{81} =3`

this eliminates options C and D

It can't be option B as both b and c aren't 4th rooted.