Réponse :

Explications étape par étape :

Bonjour

E = ( -1/3)² × 5⁻² × (3/5)³

E = 1/3²  × 5⁻²  × 3³/5³

E = 3³/3²  ×  5⁻²/5³

E = 3³⁻²  × 5⁻²⁻³

E = 3 × 5⁻⁵

F = (2/7)⁴ × (7/4)² × ( - 49/2)³

F = 2⁴/7⁴  ×  7²/(2²)² ×  ( - 7²)³/2³

F = 2⁴/7⁴ ×   7²/2⁴ ×  ( - 7⁶)/2³

F = 2⁴/ (2⁴ 2³) ×  (- 7⁶) 7² / 7⁴

F = 1/2³  × 7⁶⁻²/ 7⁴

F = 2⁻³ × 7⁴/7⁴

F = 2⁻³

G = (2/3) ⁻² × (3/4)⁴ × (27/4)⁻¹

G = 3²/2²×  (3/2²)⁴ × (2²/3³)

G = 3²/2² ×  (3⁴/2⁸) × (2²/3³)

G = (3² 3⁴) / 3³ × 2²/ (2² 2⁸)

G = 3²⁺⁴⁻³ × 2²⁻¹⁰

G = 3³  × 2⁻⁸