We are given a radical expression:
.
We need to find which of the given options is like to given expression
![\sqrt[3]{7x}.](https://img.qammunity.org/2018/formulas/mathematics/high-school/aivm7h8h98w6jzo0v2g13g2wnr099emyo8.png)
Note: Here like doesn't meant be equal.
But like means here with similar radical.
We are given cube root in the given expression.
We can see first option
has a cube root and 7x inside cube root.
Therefore,
![4(\sqrt[3]{7x}) \ is \ like\ radical \ to \ \sqrt[3]{7x} .](https://img.qammunity.org/2018/formulas/mathematics/high-school/5rbmwcx4f5g12f0rz168z11ibp54bup0mr.png)