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) $\sqrt[7]{12} =12 ^{\frac{1}{7}}$

2)$(\sqrt[7]{3})^{4} =3^{\frac{4}{7}}$

3) $\sqrt[7]{81} =81^{\frac{1}{7}} =3^{\frac{4}{7}}$

4)$\sqrt[4]{21} =21^{\frac{1}{4}}$

5) $\sqrt[4]{3^{7}} =3^{\frac{7}{4}}$

6)$\sqrt[4]{3^{7}} =3^{\frac{7}{4}}$

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