Question

Calcule o valor da expressão:

(1 -1/3)³ - (-1/3)³ + (3/2)-²

Answer 1

=(2/3)^3 - (-1/3)^3 + (3/2)^-2
=8/27 - (-1/3)^3 + (3/2)^-2
=8/27 - -1/27 + (3/2)^-2
=1/3 + (3/2)^-2
=1/3 + 4/9
=7/9