Réponse :
Explications étape par étape
Bonjour
A = 5(3x + 2)
A = 5 * 3x + 5 * 2
A = 15x + 10
B = x(2 - 3x)
B = x * 2 + x * (-3x)
B = 2x - 3x^2
C = 5x * 7x
C = 35x^2
D = (4x + 2)(3x + 1)
D = 12x^2 + 4x + 6x + 2
D = 12x^2 + 10x + 2
E = 20 - (15 + 7x)
E = 20 - 15 - 7x
E = -7x + 5
F = 4(3x - 7) + 15
F = 12x - 28 + 15
F = 12x - 13
G = 4 - 2x(3x - 5)
G = 4 - 6x^2 + 10
G = -6x^2 + 14
H = (5x - 4) * 3
I = 4(2x + 3) + 5(4x + 6)
I = 8x + 12 + 20x + 30
I = 28x + 42
J = (x - 7) - (2x + 4)
J = x - 7 - 2x - 4
J = -x - 11
K = 4(2x - 3) - 8
K = 8x - 12 - 8
K = 8x - 20
L = (3y + 3)(x - 4)
L = 3xy - 12y + 3x - 12
M = 5x(3y - 2) - (3y + 12)
M = 15xy - 10x - 3y - 12
N = (3x - 2)(5x - 4)
N = 15x^2 - 12x - 10x + 8
N = 15x^2 - 22x + 8
P = 3x - 5x^2 - 7x + 12x^2
P = (12 - 5)x^2 + (3 - 7)x
P = 7x^2 - 4x
Q = 3 * 2y - 5x * 3y - (-3x + 4)
Q = 6y - 15xy + 3x - 4
R = (2x - 5)(4x - 7)
R = 8x^2 - 14x - 20x + 35
R = 8x^2 - 34x + 35
S = 3x - 1 - (5x^2 + 3x)
S = 3x - 1 - 5x^2 - 3x
S = -5x^2 - 1
T = (3x - 4)(-x + 4)
T = -3x^2 + 12x + 4x - 16
T = -3x^2 + 16x - 16
U = 2x * (-3) * (-6x)
U = -6x * (-6x)
U = 36x^2
V = 3x * 5 - 2 * 4x^2 - (4x - 9)
V = 15x - 8x^2 - 4x + 9
V = -8x^2 + 11x + 9
W = (2 - 3x)(-2x - 7)
W = -4x - 14 + 6x^2 + 21x
W = 6x^2 + 17x - 14
X = x(3y - 2) - y(5x + 9)
X = 3xy - 2x - 5xy - 9y
X = -2xy - 2x - 9y
Y = 4x^2 - 7x + 5 - 2x^2 + 12x - 9
Y = 2x^2 + 5x - 4
