Bonjour j’aurai besoin d’aide pour mon exercice de maths :

1. Réduire ces expressions :

A = 2x + 3x - 4y + 6y - 4xau carre

B = ( 3x - 2 ) - ( -4x + 3 )

C = 5x + 4 + ( 2x - 4 )


2. Développer ces expressions suivantes :

D = 2x ( 4x - 5 )

E = - 3x ( x - 2 )

F = ( x - 2 ) au carre

G = ( 2x - 3 ) ( - 3x + 4 )

H = 3x ( x + 2 ) + ( 2x + 4 ) 3x

I = ( 2x - 4 ) ( - 6x + 3 ) - 2x ( x + 1 )


3. Factoriser les expressions suivantes :

J = ( 2x + 3 ) ( 4x - 4 ) + ( 5x + 7 ) ( 2x + 3 )

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