Question

Which expression is equivalent to

Answer 1

\[\sqrt{b}^3\]

Answer 2

\(\large\color{black}{ \tt \sqrt[3]{b}=\sqrt[3]{b^1} }\)

now use the rule: \(\large\color{slate}{ \tt \sqrt[c]{x^a}=x^{a/c} }\)

Answer 3

you get b to what power?

Answer 4

Just like what fakeee said \[\sqrt{x} = x ^{\frac{ 1 }{ 2 }}\]