Réponse :
(a - b)^2 = a^2 - 2ab + b^2
(a + b)^2 = a^2 + 2ab + b^2
a^2 - b^2 = (a - b)(a + b)
Explications étape par étape
Bonsoir
Developer :
A = (x + 3)^2
A = x^2 + 6x + 9
B = (y - 5)^2
B = y^2 - 10y + 25
C = (x + 10)(x - 10)
C = x^2 - 100
D = (5x - 1)^2
D = 25x^2 - 10x + 1
E = (4a + 6)^2
E = 16a^2 + 48a + 36
Factoriser :
F = 9x^2 + 6x + 1
F = (3x)^2 + 2 * 3x * 1 + 1^2
F = (3x + 1)^2
G = x^2 - 16
G = x^2 - 4^2
G = (x - 4)(x + 4)
H = 36x^2 - 49
H = (6x)^2 - 7^2
H = (6x - 7)(6x + 7)
I = x^2 - 8x + 16
I = x^2 - 2 * x * 4 + 4^2
I = (x - 4)^2
J = 1 - 6b + 9b^2
J = 1^2 - 2 * 1 * 3b + (3b)^2
J = (1 - 3b)^2
