Factorisation de (2x-3)(x+7)+(12-8x)(x+14)
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Question
Factorisation de (2x-3)(x+7)+(12-8x)(x+14)
1 Réponse
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1. Réponse inequation
Bonsoir,
(2x-3)(x+7)+(12-8x)(x+14)= (2x-3)(x+7)+(-8x+12)(x+14)
= (2x-3)(x+7)+4(-2x+3)(x+14)
= (2x-3)(x+7)-4(2x-3)(x+14)
= (2x-3) [x+7-4(x+14) ]
= (2x-3)(x+7-4x-56))
= (2x-3)(-3x-49)