Question

número 4/9^1,666... na forma de radical

Answer 1

1,666... = 1 + 6/9 = 15/9 = 5/3
(4/9)^5/3 = raiz cúbica de (2/3)^10
simplificando teremos:
(2/3)^3 . raiz cúbica de (2/3)
8/27 . 3raiz cúbica de 6
8/9 raiz cúbica de 6