bjr
(x+1/3)² = 4
(x+1/3)² - 4 = 0 différence de deux carrés
(x+1/3)² - 2² = 0 a² - b² = (a - b)(a + b)
[ (x+1/3) - 2][(x+1/3) + 2] = 0 équation produit nul
x +1/3 - 2 = 0 ou x +1/3 + 2 = 0
x = 2 - 1/3 ou x = -2 - 1/3
x = 5/3 ou x = -7/3
S = {-7/3 ; 5/3}
