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Sagot :

CLOCLO2

A = 3(x + 5) - 4(2x - 1)

A = 3x + 15 - 8x + 4

A = - 5x + 19

 

B = (-3y + 4)²

B = 9y² - 24y + 16

 

C = a(2 - a) - (a + 7)(2a + 6)

C = 2a - a² - 2a² - 6a - 14a - 42

C = -3a² - 18a - 42

A = 3(x + 5) - 4(2x - 1)

A = 3x + 15 - 8x + 4

A = - 5x + 19

 

B = (-3y + 4)^2

B = 9y^2 - 24y + 16

 

C = a(2 - a) - (a + 7)(2a + 6)

C = 2a - a² - 2a² - 6a - 14a - 42

C = -3a² - 18a - 42

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