Resposta:
item b) 1
Explicação passo-a-passo:
(2/5)⁵ × (2/5) ÷ (2/5)⁶=
(2/5)⁵+¹ ÷ (2/5)⁶=
(2/5)⁶ ÷ (2/5)⁶=
(2/5)⁶-⁶=
(2/5)⁰=
1
