Bonjour,
A = x + (5 - 3x) = x + 5 - 3x = -2x + 5
B = 8 + (-2x + 3) = 8 - 2x + 3 = 11 - 2x
C = 7 - (x + 3) = 7 - x - 3 = 4 - x
D = 11-(- x+ 9) = 11 +x -9 = 2 + x
E = -x - (2 + 2x) = -x - 2 - 2x = -3x - 2
F= 1 - (-11 - x) = 1 + 11 + x = 12 + x
G= -5x + (7 + 5x) = -5x + 7 + 5x = 7
H = 4 + (-11x - 4) = 4 - 11x - 4 = -11x
1 = 5x + (-5 + 2x) = 5x - 5+ 2x = 7x - 5
J = -7x + (3x - 1) + (5 - x) = -7x + 3x - 1 + 5 - x = -5x + 4
K = x²- (3x²- 15x + 4) + (15x²- 12x²- x) = x²- 3x²+ 15x - 4 + 15x²- 12x²- x = x² + 14x - 4
J’espère t’avoir aidé.
Si tu as des questions n’hésites pas à me les demander.
Bonne journée et bonne continuation.
