5 times the square root of 12 is the square root of what number? How do I find this answer? Thanks!

let n be the number you are looking for.

5 x sqrt(12) is the square root of n:

5 x sqrt(12) = sqrt(n)

Therefore, to find n, you need to square both sides of the equation.

(5 x sqrt(12))^2 = n

n = 300