Factoriser x= c'est la lettre B(x)=(2x-7)(3x+6)-2(2x+4)(2x-8) C(x)=9^2+6x+1-(5x+7)(6x+2) D(x)=9^2+12x+4-(2x-3)^2
Mathématiques
jLagt
Question
Factoriser
x= c'est la lettre
B(x)=(2x-7)(3x+6)-2(2x+4)(2x-8)
C(x)=9^2+6x+1-(5x+7)(6x+2)
D(x)=9^2+12x+4-(2x-3)^2
x= c'est la lettre
B(x)=(2x-7)(3x+6)-2(2x+4)(2x-8)
C(x)=9^2+6x+1-(5x+7)(6x+2)
D(x)=9^2+12x+4-(2x-3)^2
1 Réponse
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1. Réponse loulakar
Factoriser :
B(x) = (2x-7)*3(x+2)-2*2(x+2)*2(x-4)
B(x) = (x+2)[3(2x-7)-8(x-4)]
B(x) = (x+2)(6x-21-8x+32)
B(x) = (x+2)(-2x+11)
C(x) = (3x+1)^2-(5x+7)*2(3x+1)
C(x) = (3x+1)(3x+1-2(5x+7))
C(x) = (3x+1)(3x+1-10x-14)
C(x) = (3x+1)(-7x-13)
D(x) = (3x+2)^2-(2x-3)^2
D(x) = (3x+2-2x+3)(3x+2+2x-3)
D(x) = (x+5)(5x-1)