Réponse:
exo 1
vrai
vrai
A = x ( 11x - 1 )
B = -6x carré + 9x - 16
C = 1 -12x - 3x carré - x cube
D = - 4x carré + 11x - 20
E = ( 4x - 5 ) ( x + 7 ) = 4x carré + 23x - 35
F = - x carré - 20x - 6
G = 82x carré + 10x + 10
X = 5à ( 6 + 5b - 2à )
Y = 9xy ( 3xy + 6x - 2y )
Z = ( x - 3 ) ( x + 2 ) = x carré - x - 6
Z = ( x - 5 ) ( x - 1 ) = x carré - 6x + 5
W = ( 8 - 3x. ) ( 3x + 5 ) = 40 + 9x - 9x carré
distribuer
6x carré + 10x - 15x carré - 25x + 24x + 40
combiner
- 9x carré + 9x - 9x carré
