Bonjour j'ai un exercice en maths 3éme sur le calcul littérale . A = (3x-5) ( -2x+1) - (5x-1) (3-4x)
B = -5 (6x-4) (7x+2) +9x (8-x) (5x+4)
C = -8 (x+9y) -5 (3y+5) (6-x) +8 (3x-5y)
B = -5 (6x-4) (7x+2) +9x (8-x) (5x+4)
C = -8 (x+9y) -5 (3y+5) (6-x) +8 (3x-5y)
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