Exercice n°1 Simplifier les expressions A= 8a x(-10a) = ...
B = - 3b x 6b+ 5 x (-9b) =
C=-7c x 4 - 2c x (- 8c) =
D=10d x (-2d) - 4 x 8 =
B = - 3b x 6b+ 5 x (-9b) =
C=-7c x 4 - 2c x (- 8c) =
D=10d x (-2d) - 4 x 8 =
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