Question

faça os cálculos e mostre que : (-0,222...)^2 * 2/3^-4=1/4*

Answer 1

(-0,222...)² x (2/3)^-4 = (-2/9)² x (2/3)^-4 = 4/81 x 1/(16/81)
4/81 x 81/16 = (4 x 81)/(81 x 16) = 4/16 = 1/4

Espero ter ajudado.