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Sagot :

Bonjour,

A=

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

(2x+3)( 6x +2)

B=

(x-3) ( 6x-4 -2x -3)=

(x-3) (4x -7)

C=

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

(3x-1) ( 7x +4)

D= (10x -9 (10x+9)

identité remarquable

E=

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

identité remarquable

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