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Thomas83150
@Thomas83150
May 2019
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Bonjour j'arrive pas à faire ces 2 exercise pouvez vous m'aider merci
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swnn
Ex 100:
A = (6x-4)(x+7)-(9x²-4)
1. A = 6x²+42x-4x-28-9x²+4
A = -3x²+38x-24
2. a) 6x-4 = 2(3x-2)
b) 9x²-4 = (3x-2)(3x+2)
3. A = 2(3x-2)(x+7)-(3x-2)(3x+2)
A = (3x-2)[2(x+7)-(3x+2)]
A = (3x-2)(2x+14-3x-2)
A = (3x-2)(-x+12)
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Oui bonjour j'aurai de nouveau besoin de votre aide pour un avant-dernier exercise Merci d'avance
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Bonjour j'ai besoin d'aide la je ne comprend pas du tout ce qu'il faut faire merci pour votre aide
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A = (6x-4)(x+7)-(9x²-4)
1. A = 6x²+42x-4x-28-9x²+4
A = -3x²+38x-24
2. a) 6x-4 = 2(3x-2)
b) 9x²-4 = (3x-2)(3x+2)
3. A = 2(3x-2)(x+7)-(3x-2)(3x+2)
A = (3x-2)[2(x+7)-(3x+2)]
A = (3x-2)(2x+14-3x-2)
A = (3x-2)(-x+12)