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Sagot :

Réponse:

A.7 x 2x + 7 x 1

14x + 7

B. 2x x 5x + 2x x 3

10x au carré + 6x

C.-4 x - 5 + - 4 x 3x

25 + 12 x

D.-6x x -3x - 4 x 3 x

18 x au carré - 12 x

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