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Sagot :

Tu regroupe ce qui va ensemble.

 

C = y + 2y

C = 3y

 

D = 2y + 3 - y

D = y + 3

 

E = 2y + y² - 3y - 2y²

E = -y² - y

 

F = 3y + 2 + 5y - 3 + 7y²

F = 7y² + 8y - 1

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