Bonjour j'ai un exercice en maths 3éme sur le calcul littérale . A = (2x+5) (-3x-1) -5 (2-x)
B = 2 (-3x+5) + (-3x+7) (2x-9)
C = 2t (3-4t) - (5-a) + (9t+2) (3t-3)
D = - (5-2z) (z-8)
B = 2 (-3x+5) + (-3x+7) (2x-9)
C = 2t (3-4t) - (5-a) + (9t+2) (3t-3)
D = - (5-2z) (z-8)
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