Déterminer l'antécédent par f de -6 de la fonction f(x)=(2x+6)(x-1) s'il vous plaît

By: USER5261
27 Agustus 2025 mathematiques 5 minutes
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Grade: Education Subject: mathematiques
Déterminer l'antécédent par f de -6 de la fonction f(x)=(2x+6)(x-1) s'il vous plaît
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Explications étape par étape:

il faut résoudre l'équation (2x+6)(x-1) = -6

soit en développant 2x^2 +6x -2x -6 = -6

d'où 2x^2 +4x =0

on factorise par 2x

2x ( x + 2) =0

il y a deux solutions, soit x=0 soit x=-2

Answered on 27 Agustus 2025

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