Question

Select all radical expressions that are equivalent to 3 4/7

Answer 1

the second and the third one because first is the same as 3 4/7 and 81=3^4

Answer 2

The given expression in simplified form are:

1)
`\sqrt[7]{12}  =12 ^{(1)/(7)}`

2)
`(\sqrt[7]{3})^(4)   =3^{(4)/(7)}`

3)
`\sqrt[7]{81}  =81^{(1)/(7)}    =3^{(4)/(7)}`

4)
`\sqrt[4]{21}  =21^{(1)/(4)}`

5)
`\sqrt[4]{3^(7)}  =3^{(7)/(4)}`

6)
`\sqrt[4]{3^(7)}  =3^{(7)/(4)}`

Among all the options option 2 and 3 are the right one.