Answer: 

Explanation:
 Remember that:
 

 
![\sqrt[n]{a^n}=a](https://img.qammunity.org/2020/formulas/mathematics/middle-school/7n3agtxpmdkpp0ixo9p04d3znbyw20xqj1.png)
 Given the following expression:
 

 The steps to simplify this expression, are:
 1. Apply the Distributive property:
 

 2.Since:
 

 You can rewrite the radicand 12 in this form:
 

 3. Simplifying, you get:
 

 4. Notice that the indices of the Radicals are the same, but the radicands don't, then, you can subtract the Radicals.