Réponse :
Explications étape par étape
Bonsoir
Résoudre :
(8x + 2)^2 - (5 - x)(8x + 2) = 0
(8x + 2)(8x + 2 - 5 + x) = 0
(8x + 2)(9x - 3) = 0
2(4x + 1) * 3(3x - 1) = 0
6(4x + 1)(3x - 1) = 0
4x + 1 = 0 ou 3x - 1 = 0
4x = -1 ou 3x = 1
x = -1/4 ou x = 1/3
(x + 6)(x - 5) = 0
x + 6 = 0 ou x - 5 = 0
x = -6 ou x = 5
4x^2 - 16 = 0
(2x)^2 - 4^2 = 0
(2x - 4)(2x + 4) = 0
2(x - 2) * 2(x + 2) = 0
4(x - 2)(x + 2) = 0
x - 2 = 0 ou x + 2 = 0
x = 2 ou x = -2
