Bonjour pouvez vous m'aider à faire cet exercice de maths svp

Résoudre l'équation suivante en détaillant :

(5x+7)(-4x+6)-15x-21=0

Merci <3

By: USER9638
27 Agustus 2025 mathematiques 5 minutes
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Question

Grade: Education Subject: mathematiques
Bonjour pouvez vous m'aider à faire cet exercice de maths svp

Résoudre l'équation suivante en détaillant :

(5x+7)(-4x+6)-15x-21=0

Merci <3
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Answer (179)

Best Answer
(297)

Réponse :

slt

Explications étape par étape :

(5x+7)(−4+6)−15x−21=0

(5x+7)×2−15x−21=0

10x+14−15x−21=0

−5x+14−21=0

−5x−7=0

−5x=7

x= 7/−5

x=-7/5

De rien  <3

Answered on 27 Agustus 2025

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