Réponses

2014-10-11T13:11:42+02:00
(x-2)² - 3 = 0
x²-4x +4 -3 =0
x² -4x +1 =0
1 = -x²+4x
1 = x(-x+4)
x(4-x ) = 1

donc
(x-2)² - 3 =
x(4-x ) = 1