Réponse :
Explications étape par étape
Bonjour
développer
K=(-3 - 2x) (7- 5x)
K = -21 + 15x - 14x + 10x^2
K = 10x^2 + x - 21
L=3 (x-7)
L = 3x - 21
M=(8-x) (2x-3)
M = 16x - 24 - 2x^2 + 3x
M = -2x^2 + 19x - 24
N=(2x-3)2au carré
N = 4x^2 - 12x + 9
O=(3x+5) (3x-5)
O = 9x^2 - 25
P=-3 (x-9)
P = -3x + 27
Q=(8-x) (2x+5)
Q = 16x + 40 - 2x^2 - 5x
Q = -2x^2 + 11x + 40
R=(3x-2)2au carré
R = 9x^2 - 12x + 4
S=(x+2) (x-1)+3(x+2)
S = x^2 - x + 2x - 2 + 3x + 6
S = x^2 + 4x + 4
T=(x-1) (x-3)-2 (x-1)
T = x^2 - 3x - x + 3 - 2x + 2
T = x^2 - 6x + 5
