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Sagot :

Réponse :

Exercice 2

1. P = 2 ( 3x - 2 ) + 2 ( 10 - 2x )

     = 6x - 4 + 20 - 4x

     = 2x + 16

2. A = ( 3x - 2 )( 10 - 2x )

3. A = 30x - 6x² - 20 + 4x

      = - 6x² + 34x - 20

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