factoriser (x+1)(5x-1) -(x+1)(3x-12)=9
Mathématiques
jojo269
Question
factoriser (x+1)(5x-1) -(x+1)(3x-12)=9
1 Réponse
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1. Réponse jujitsuzakaria
(x+1)(5x-1) -(x+1)(3x-12)=9
(x+1)[(5x-1)-(3x-12)]=9
(x+1)(5x-1-3x+12)=9
(x+1)(2x+11)=9