Bonjour
(-2x - 1)/3 = (1 - 2V(2x))/3
3(-2x - 1) = 3(1 - 2V(2x))
-6x - 3 = 3 - 6V(2x)
6x + 3 + 3 - 6V(2x) = 0
6x - 6V(2x) + 6 = 0
(6x + 6)^2 = (6V(2x))^2
36x^2 + 72x + 36 = 36 * 2x
36x^2 + 72x + 36 = 72x
36x^2 + 36 + 72x - 72x = 0
36x^2 + 36 = 0
36(x^2 + 1) = 0
Pas de solution car 36 > 0 et x^2 + 1 > 0
