Factoriser : A = (2x+3)(x-7)+(2x+3)(-4x+5) B = (x-1)(2x+4)-(x-1)(x+5)+2(x-1)
Mathématiques
mella60
Question
Factoriser :
A = (2x+3)(x-7)+(2x+3)(-4x+5)
B = (x-1)(2x+4)-(x-1)(x+5)+2(x-1)
A = (2x+3)(x-7)+(2x+3)(-4x+5)
B = (x-1)(2x+4)-(x-1)(x+5)+2(x-1)
1 Réponse
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1. Réponse slyz007
A=(2x+3)(x-7)+(2x+3)(-4x+5)
A=(2x+3)((x-7)+(-4x+5))
A=(2x+3)(x-7-4x+5)
A=(2x+3)(-3x-2)
A=-(2x+3)²
B=(x-1)(2x+4)-(x-1)(x+5)+2(x-1)
B=(x-1)((2x+4)-(x+5)+2)
B=(x-1)(x+1)