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Exercice 16 Développer et réduire les expressions suivantes :
A= 5x + x (7 + 2x) B = 3 (4x – 3) - 5x
C = 6x² – 2x (4 – 3.x)
D = (3 - 4x) x x + 5x? E = 6x (3 – x) + 6x F = (x + 3) x 4x - 12x
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