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Sagot :

Réponse:

Bonjour !

A= (2x + 5) (7x + 3) - (x + 3) (2x + 5)

= (2x + 5) [(7x + 3) - (x + 3)]

= (2x + 5) (7x + 3 - x - 3)

= (2x + 5) 6x

= 6x (2x + 5)

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