Răspuns: 1
Explicație pas cu pas:
(2/7)¹⁷ • (2/7)¹¹ : (2/7)²⁸ =
(2/7)¹⁷⁺¹¹ : (2/7)²⁸ = (2/7)²⁸ : (2/7)²⁸ =
(2/7)²⁸⁻²⁸ = (2/7)⁰ = 1
Formule:
a⁰ = 1 unde a ≠ 0
aⁿ · aᵇ = (a)ⁿ ⁺ ᵇ
aⁿ : aᵇ = (a)ⁿ ⁻ ᵇ
