On donne :
A = 6X - ( 5X + 4 )
B = (3X² -4 ) -( 3X - 2X² ) - 15
C = 7 (3X + 4 ) - 6
D = ( X - 4 ) ( 2X - 5 )
E = ( 3X - 4 )²
F = (2X +5 ) ( 3X-1 ) +5 (X - 2 )
G = ( 3X - 5 ) (2X + 1 ) - ( 5X - 1 ) ( 4X- 3 )

 

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