Bonjour je n’arrive pas à faire l’exercice 8 et 9 merci de m’aider svp

Réponse :

Bonsoir,

Explications étape par étape

8)

A = 0

B = -2a

C = 9y

D = -12x

E = -14y^2

F = x

G = -12t^2

H = -16y

I = -16y

9)

A = -8x+5+(-x-6)

A = -8x+5-x-6

A = -9x-1

B = -(10x+10)-10-7x

B = -10x-10-10-7x

B = -17x-20

C = -8-3x-(6x-6)

C = -8-3x-6x+6

C = -9x-2

D = -(5x-3)-9x+8

D = -5x+3-9x+8

D = -14x+ 11

E = 2x-7-(8x+10)

E = 2x-7-8x-10

E = -6x-17

F = 10x+(-6x+9)+6

F = 10x-6x+9+6

F = 4x+15