Question

 qual a rais quadrada de 441

Answer 1

441 | 3
147 | 3
  49 | 7
    7 | 7
    1 | 

√441 = √3 x 3 x 7 x 7
√441 = √9 x √49
√441 = 3 x 7
√441 = 21

Answer 2

$Resolu\c{c}\~ao\to \boxed{\sqrt{441} = \sqrt{3^2*7^2} = 3*7 = 21 }$

Espero ter ajudado. :))