factoriser svp: (2x+6)(5-4x)-(x+3)(x-2) MERCI!
Mathématiques
victor16
Question
factoriser svp: (2x+6)(5-4x)-(x+3)(x-2) MERCI!
1 Réponse
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1. Réponse Fabrice
(2x+6)(5-4x)-(x+3)(x-2)
=2(x+3)(5-4x)-(x+3)(x-2)
= (x+3)(10-8x-x+2)
= (x+3)(12-9x)