>>214649678
Shit the squared symbols don't work, let me rewrite it.
396 is an integer, and all integers can be written as multiples of prime numbers.
For example, 6 = 2*3.
These prime numbers are called the prime factors of a number.
To find those numbers, you start dividing 396 by primes, and keeping it if you find a whole number as a result.
So for example, for 396.
396/2=198
198/2=99
99/3=33
33/3=11, 11 is a prime so we stop here.
Meaning 396 = 2 * 2 * 3 * 3 * 11, or 2^2 * 3^2 * 11.
As you probably now already, if m = n, then √m = √n, so we can do.
√396 = √(2^2 * 3^2 * 11).
And as you probably already know, √ is the opposite of 2, so √(n^2)=n.
And last thing, if we have √(m^2 * n), that equals m * √n.
So for any root of an integer, we can "extract" the prime factors that are squared out of the square root.
For √396 = √(2^2 * 3^2 * 11), then we can get √396 = 2 * 3 * √11 or 6√11.