Développe et réduis: A=3 (4x + 2) B = 2x (6-7) C =-9x (-3x+5) D=-(6+3x) E = 8x (3+4x) - (2x-3) F = 12x-5(x-4)
Mathématiques
lbourgeois8
Question
Développe et réduis:
A=3 (4x + 2)
B = 2x (6-7)
C =-9x (-3x+5)
D=-(6+3x)
E = 8x (3+4x) - (2x-3)
F = 12x-5(x-4)
A=3 (4x + 2)
B = 2x (6-7)
C =-9x (-3x+5)
D=-(6+3x)
E = 8x (3+4x) - (2x-3)
F = 12x-5(x-4)
1 Réponse
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1. Réponse 1000sourisverte25
Réponses :
A = 3(4x+2) = 3*4x + 3*2 = 12x+6
B = 2x(6-7) = 2x*6 -2x*7 = 12x - 14x = -2x
C = (-9x)*(-3x) + (-9x)*5 = 27x - 45x = -18x
D = (-1)*6 + (-1)*3x = -6 -3x
E = 8x*3 + 8x*4x - (2x-3) = 24x + 32x² - (2x-3) = 32x² + 24x -2x + 3
F = 12x - 5x + 20 = 7x + 20