Simplify radical expression. leave in radical form. the squarefoot of 7(the squarefoot of 14+the squarefoot 3)

To solve this problem you must apply the proccedure shown below:

 1- You have the following radical expression given in the problem above:

 (√7)(√(14)+√(3))

 2- When you apply the distributive property, you obtain:

 (√7)(√(14))+ (√7)(√(3))

 3-Simpliying, you have:

 (7√2)+(√21)

 4- Therefore the answer is:  (7√2)+(√21)
 

The answer would be the second choice : )