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Sagot :

D = ( 2x + 6 ) [ ( 5x -3 ) + 4 ]
( 2x + 6 ) ( 5x + 1 )

E= ( 6x-5 ) [ ( 6x+4 ) + 1 ]
(6x - 5) (6x + 5 )

F= ( 3x - 5 ) [ (3x -5) + 1 ]
( 3x -5 ) ( 3 x - 4 )

Réponse:

D= (2x+6)((5x-3)+4)

=(2x+6)(5x+1)

E= (6x-5)((6x+4)+1)

=(6x-5)(6x+5)

F= (3x-5)((3x-5)+1)

=(3x-5)(3x-4)

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