Réponse :
bonsoir
Explications étape par étape :
A = 7⁴ x 7²/ 7⁵ x 7¹
A = 7⁴⁺²/7⁵⁺¹
A = 7⁶/7⁶
A = 1
B = 5³ x (5⁻⁶)² / 5¹²
B = 5³ x 5⁻⁶ˣ²/5¹²
B = 5³ x 5⁻¹²/5¹²
B = 5³⁻¹²/5¹²
B = 5⁻⁹/5¹²
B = 5⁻⁹ x 5⁻¹²
B = 5⁻²¹
C = (-3)⁻² x (-3)⁵ / ((-3)⁻⁵)⁷
C = (-3)⁻²⁺⁵ / (-3)⁻⁵ˣ⁷
C = (-3)³ / (-3)⁻³⁵
C = (-3)³⁺³⁵
C = (-3)³⁸
bonne soirée
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Réponse :
bonsoir
Explications étape par étape :
A = 7⁴ x 7²/ 7⁵ x 7¹
A = 7⁴⁺²/7⁵⁺¹
A = 7⁶/7⁶
A = 1
B = 5³ x (5⁻⁶)² / 5¹²
B = 5³ x 5⁻⁶ˣ²/5¹²
B = 5³ x 5⁻¹²/5¹²
B = 5³⁻¹²/5¹²
B = 5⁻⁹/5¹²
B = 5⁻⁹ x 5⁻¹²
B = 5⁻²¹
C = (-3)⁻² x (-3)⁵ / ((-3)⁻⁵)⁷
C = (-3)⁻²⁺⁵ / (-3)⁻⁵ˣ⁷
C = (-3)³ / (-3)⁻³⁵
C = (-3)³⁺³⁵
C = (-3)³⁸
bonne soirée