Verified answer

Réponse :

Bonjour

Explications étape par étape

X1 = (2 - 4)/2 = -2/2 = -1

X2 = (2 + 4)/2 = 6/2 = 3

S = {-1 ; 3}

x............|-inf...........(-1)..............3..........+inf

x + 1......|.........(-)......o.......(+)..........(+)..........

x - 3.....|..........(-)................(-)....o.....(+).........

Ineq....|...........(+).....||.......(-).....||......(+)........