21The square root of 441 is 21
Yes because 21 is a rational number
441 square root
21
It is 21
441 has two square roots; 21 or -21.
The principal square root is the non-negative square root.
21
12
Yes, they are.
The principal root is the positive square root.
√441 = √(3^2 × 7^2) = 3 × 7.