Réponse :
Explications étape par étape
Bonsoir
S = 12x - x^2 - (3x)^2 + 4x - 4 + 6x - 7
S = 12x - x^2 - 9x^2 + 4x + 6x - 4 - 7
S = -10x^2 + 22x - 11
E = 4(-5x + 8)
E = -20x + 32
H = (4x + 3)(5 - 2x)
H = 20x - 8x^2 + 15 - 6x
H = -8x^2 + 14x + 15
N = 6x^7 + x^18 - 2x^3 + 4 - 5x^6 - 3x^3 + 8 - 7x^3
N = x^18 + 6x^7 - 5x^6 - 12x^3 + 12
A = (x - 3)^2
A = x^2 - 6x + 9
Z = (2x + 3)(2x - 3)
Z = (2x)^2 - 3^2
Z = 4x^2 - 9
O = (4x - 3)(5x - 8) - (x^2 + 2 - 3x)
O = 20x^2 - 32x - 15x + 24 - x^2 - 2 + 3x
O = 19x^2 - 44x + 22
S = (x + 3)^2 + (2x - 5)^2
S = x^2 + 6x + 9 + 4x^2 - 20x + 25
S = 5x^2 - 14x + 34
