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On donne :
A = 6x – (5x + 4)
B = (3x2 - 4) - (3x – 2x2) - 15
C = 7(3x + 4) - 6
D = (x - 4x2x - 5)
E = (3x - 41-la
F = (2x + 5 X3x - 1)+ 5(x - 2)
)
G = (3x - 5X2x +1) - (5x - 1/4x - 3)
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