cum se face?plss repede

Răspuns:
Explicație pas cu pas:
(8/27)⁵ : (4/9)⁷ = (2³/3³)⁵ :(2²/3²)⁷ = (2/3)³ˣ⁵ : (2/3)²ˣ⁷ = (2/3)¹⁵⁻¹⁴ = 2/3
c)(8/27)⁵:(4/9)⁷=
=[(2/3)³]⁵:[(2/3)²]⁷
=(2/3)³×⁵:(2/3)²×⁷
=(2/3)¹⁵:(2/3)¹⁴
=(2/3)¹⁵-¹⁴
=(2/3)¹
=2/3