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Exercice n°7 : Développe puis réduis :

A = 8 - 4(x - 3)
B = 2(3 - 4x) + 4(1 - 2x)
C = -2 (3x + 1) - 3(x + 3)
D = 5 (6x - 1) - (3 + 8x)
E = 2x (x + 4) + (1 - x)
F: - * (2 - x)+ (x² - 2x)-(3x² - 4)
G = 3x2 - (x2 - 4x + 5) - 4x (x - 3)
H = - (2x² - 7x + 4) - 4x (-3 + 2x)
I = 5x (- 3x - 6) - (-15x² + 18x - 6)​

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