Question

WHich one is it. Picture below. Is it A?

Answer 1

I think it would be c

Answer 2

Not a -_-
But C
I know this because 4 x 5 is 20.
You can do this inside the radical.
sqrt of 4 x 5.
sqrt of 4 is 2 so that can be taken out of the radical. But the sqrt of 5 is irrational so it stays inside.