Sagot :
Bonjour
(3x - 1) (8x - 2) = 0
3x - 1 = 0 ou 8x - 2 = 0
3x = 1 8x = 2
x = 1/3 x = 2/8
x = 1/4
x² - 50 = - 1
x² - 50 + 1 = 0
x² - 49 = 0
x² - 7² = 0
(x - 7) (x + 7) = 0
x - 7 = 0 ou x + 7 = 0
x = 7 x = - 7
Bonjour
(3x - 1) (8x - 2) = 0
3x - 1 = 0 ou 8x - 2 = 0
3x = 1 8x = 2
x = 1/3 x = 2/8
x = 1/4
x² - 50 = - 1
x² - 50 + 1 = 0
x² - 49 = 0
x² - 7² = 0
(x - 7) (x + 7) = 0
x - 7 = 0 ou x + 7 = 0
x = 7 x = - 7