2 times the square root of 49, what are all the possible answers?

49

7

14

etc?

Only 14 is the answer to 2 times the square root of 49 (which is 7)

So the simplest way to get this is think about number that multiply themselves.

So 4x4=16, 3x3=9 things like that, in this case it's 7x7=49. Then the question ask you to multiply that times two and you get 14.