Answer:
D. 10 square root 3 is your answer
Explanation:
Here is what you do.
square root 30 = 3 x 2 x 5
square root 10 = 2 x 5
Add them together.
3 x 2 x 2 x 5 x 5
3 x 4 x 25.
4 and 25 can come out of the square root.
2 x 5 = 10
10 square root 3 is your answer.