Question 468152
I think you mean:
square root of 4 times the square root of 2?
let's talk a and b first.
the square root of a times the square root of b equals the square root of (a times b).
as an example:
the square root of 4 times the square root of 9 is equal to the square root of (4 times 9) which is equal to the square root of (36) which is equal to 6.
if you take the square roots separately first, you will get the same answer.
the square root of 4 is equal to 2.
the square root of 9 is equal to 3.
2 times 3 is equal to 6.