1. Développer puis réduire les expressions suivantes. A = 3x(7 + x)
B = (2x - 3)(4x + 5)
C = (3x-4) (7x - 5)
D = 4y + 2 (6 - 7y)
E E = (7 x + 2) - (4x - 5)
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B = (2x - 3)(4x + 5)
C = (3x-4) (7x - 5)
D = 4y + 2 (6 - 7y)
E E = (7 x + 2) - (4x - 5)
-
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