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Sagot :

Réponse :

Explications étape par étape :

Bonsoir,

1)

A = x⁴ * (x⁻²)³ * x⁵  = x⁴ * x⁻²ˣ³  * x⁵ = x⁴ * x⁻⁶  * x⁵ = x⁴ ⁻⁶ ⁺⁵ = x³

B = x⁷ / (x⁸ * x⁻⁵) = x⁷ * x⁻⁸ * x⁵ = x⁷ ⁻⁸ ⁺⁵ = x⁴

2)

C = (a³ * b)² = a³ˣ² * b² = a⁶ * b²

D = (a/b)³ * a⁻² = a³ * a⁻² / b³ = a¹ / b³

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