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Sagot :

Bonjour

exercice 8

A= 12 + 6a = 6 (2 + a)

B= 24c + 12 = 12 (2c + 1)

C= 3x - 15 = 3 (x - 5)

D= 21 - 7g  = 7( 3 - g)

E= 18b + 9b   = 37b

Bonjour, ci-dessous la correction à tes 2 exercices.

Exercice 8 :

a. 12 + 6a =  6 (2 + a)

b. 24c + 12 = 12 ( 2c + 1 )

c. 3x - 15 = 3 ( x - 5 )

d. 21 - 7g = 7 ( 3 - g )

e. 18b + 9b = 37b

Exercice n°9 :

a. 37x + 28x = 65x

b. 5x^2 + 3x = x ( 5x + 3 )

c. 38x - 28x^2 + 12 = - 2 ( 14^2 - 19x - 6 )

d. 7x - 7 = 7 ( x - 1 )

Voilà, bonne journée ;-)

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