Răspuns:
a) (3/7)²³
b) (5/9)¹³
c) (2/5)⁷¹
Explicație pas cu pas:
a) [(3/7)⁸]⁵: (3/7)¹⁷ = (3/7)⁸ˣ⁵⁻¹⁷ = (3/7)⁴⁰⁻¹⁷ = (3/7)²³
b) [(5/9)⁴]⁶: (5/9)¹¹ = (5/9)⁴ˣ⁶⁻¹¹ = (5/9)²⁴⁻¹¹ = (5/9)¹³
c) (2/5)⁵¹: {[(2/5:[(2/5)⁷]³} = (2/5)⁵¹ :[(2/5):(2/5)⁷ˣ³] =
= (2/5)⁵¹ : [(2/5) :(2/5)²¹] = (2/5)⁵¹ : [(2/5) ·(5/2)²¹] =
= (2/5)⁵¹ : (5/2)²⁰ = (2/5)⁵¹ ·(2/5)²⁰ = (2/5)⁵¹⁺²⁰ = (2/5)⁷¹
