Determine if each root is a rational or irrational number. Explain your reasoning.

Question

√36
3√78

Answer 1

√x is rational if x is a perfect square.
otherwise, not.
For example, √25 is rational because 25 = 5*5 = 5^2

Answer 2

Thanks, Obama

Answer 3

Determine if the root is a rational or irrational number. Explain your reasoning.
√10