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Sagot :

A= -5x-20

B= -3x+6

C= -45x +45

Réponse :

Bonjour,

A = -5(x + 4)

   = -5 * x + (-5) * 4

   = -5x + (-20)

B = -3(x - 2)

   = -3 * x - (-3) * 2

   = -3x + 6

 

C = -4(5x - 1)

   = -4 * 5x - (-4) * 1

   = -20x + 4

Bon courage ^-^

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