Réponse :
Explications étape par étape
a^2 - 2ab + b^2 = (a - b)^2
a^2 + 2ab + b^2 = (a + b)^2
a^2 - b^2 = (a - b)(a + b)
Bonjour
A = x^2 + 8x + 16
A = x^2 + 2 * x * 4 + 4^2
A = (x + 4)^2
B = x^2 - 20x + 100
B = x^2 - 2 * x * 10 + 10^2
B = (x - 10)^2
C = x^2 - 16
C = x^2 - 4^2
C = (x - 4)(x + 4)
D = 9x^2 + 64 + 48x
D = (3x)^2 + 8^2 + 2 * 3x * 8
D = (3x + 8)^2
Exercice :
A = (x + 4)^2 - 49
A = (x + 4 - 7)(x + 4 + 7)
A = (x - 3)(x + 11)
B = (x - 4)^2 - (2x - 1)^2
B = (x - 4 - 2x + 1)(x - 4 + 2x - 1)
B = (-x - 3)(3x - 5)
