Answer:
I think the answer for the first one is 3 I am not sure about the second one
Answer:

Step-by-step explanation:
Let's look at the prime factors of 210.
210 = 2 * 3 * 5 * 7

Since no factor appears more than once, this radical cannot be simplified.
Answer:
14
Step-by-step explanation:
64-8=56
56/4=14