1 Recopie les expressions suivantes en faisantapparaître les signes « × » sous-entendus. A = 3x + 6 
B = − 5(2y +7)
.C = 4w2
D = 4u(5 − 2u)
E = (4 + x)(3 − 4x)
F = 2a2 + 4a − 5
merci a ceux qui vont n aider
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