Réponse :
Explications étape par étape
Bonjour
résoudre les équations suivantes:
1/3x-1/2=2
1/3 x = 2 + 1/2
1/3 x = 4/2 + 1/2
x = 5/2 * 3
x = 15/2
-3/4x-1/2=0
-3/4 x = 1/2
x = 1/2 * (-4/3)
x = -2/3
(x-1)(3+x)=0
x - 1 = 0 ou 3 + x = 0
x = 1 ou x = -3
(x+2)(x-5)(1-x)=0
x + 2 = 0 ou x - 5 = 0 ou 1 - x = 0
x = -2 ou x = 5 ou x = 1
25x²-4=0
(5x)^2 - 2^2 = 0
(5x - 2)(5x + 2) = 0
5x - 2 = 0 ou 5x + 2 = 0
5x = 2 ou 5x = -2
x = 2/5 ou x = -2/5
49x²+28x+4=0
(7x)^2 + 2 * 7x * 2 + 2^2 = 0
(7x + 2)^2 = 0
7x + 2 = 0
7x = -2
x = -2/7
16x²-24x+9=0
(4x)^2 - 2 * 4x * 3 + 3^2 = 0
(4x - 3)^2 = 0
4x - 3 = 0
4x = 3
x = 3/4
