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Sagot :

EMAGLN

Réponse :

Explications étape par étape :

A = 3 x 2X + 6 x 7X = 6X + 42X = 48X

B = 4 x 3X - 6 x 2X = 12X - 12X = 0

C = -3X x 5X + 7 x X = -15X² + 7x

D = -6X x 2X² + 4X x X - 3X x 6 = -12X³ + 4X² - 18X

E = -7 x 5X² + 8X x 5X = -35X² + 40X² = 5X²

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