Question

Determine as raízes:

A)√-64
B)√169
C)√121
D)⁴√81

Answer 1

Explicação passo a passo:

$A)~~~~\sqrt{-64} \to n\~{a}o~~~existe~~~em~~R~~raiz~~de~~n\'umero~~negativo\\ \\ \\ B)~~\sqrt{~169} =\sqrt{13^2} =13\\ \\ \\ C)~~\sqrt{~121} =\sqrt{11^2} =11\\ \\ \\ D)~~\sqrt[~4]{81} =\sqrt[4]{3^4} =3$