aidez moi a factoriser (3x+6)(x-9)-(5x-3) svp
Mathématiques
taekwondo5
Question
aidez moi a factoriser (3x+6)(x-9)-(5x-3) svp
1 Réponse
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1. Réponse Geijutsu
Bonsoir,
(3x+6)(x-9)-(5x-3)(x+2) = 3(x+2)(x-9)-(5x-3)(x+2) = (x+2)[3(x-9)-(5x-3)] = (x+2)[3(x-9)-5x+3] = (x+2)(3x-27-5x+3) = (x+2)(-2x-24)