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Sagot :

E= 5a - 15
G=16x - 24x
G= -8x
F= -4x + 8

Réponse:

Exercice 2

E= 5( a-3 )

E= 5×a +5× -3

E= 5a-15

F= -2( 2x - 4 )

F= -2×2x -2×-4

F= -4x + 8

G= 4x(8 - 6x)

G= 4x × 8 + 4x × -6x

G = 32x - 24x²

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