A= (5x-4)(3x-2)= ? B= 4x(2x-7)-(10x-12x+13)= ? C= 3x-(2x+3)(6x-5)= ? D= (4x-2)(x+3)-2(-5x+2x+9)= ?
Mathématiques
frona2000
Question
A= (5x-4)(3x-2)= ?
B= 4x(2x-7)-(10x-12x+13)= ?
C= 3x-(2x+3)(6x-5)= ?
D= (4x-2)(x+3)-2(-5x+2x+9)= ?
B= 4x(2x-7)-(10x-12x+13)= ?
C= 3x-(2x+3)(6x-5)= ?
D= (4x-2)(x+3)-2(-5x+2x+9)= ?
1 Réponse
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1. Réponse nutella62
A= (5x-4)(3x-2)-(10x-12x+13x) = 15x²-10x-12x+8-10x-12x+13x = 15x²-31x+8
B= 4x(2x-7)-(10x-12x+13) = 8x²-28x-10x-12x+13 = 8x²-50x+13
C= 3x-(2x+3)(6x-5) = 3x-12x²-10x-18x+15 = -12x²-25x+15
D= (4x-2)(x+3)-2(-5x+2x+9) = 4x²+12x-2x-6+10x-4x-18 = 4x²+16x-24
J'espère t'avoir aidé !