Réponses

2014-03-24T18:37:58+01:00
si ton équation est bien égale à zéro
x+10+x+2x(x+10)  = 0
2x + 10 + 2x
² + 20x  = 0
2x
² + 22x + 10 = 0
Discriminant = b
² − 4ac
Discriminant = -22*-22 - 4*2*10
Discriminant = 484 - 80
Discriminant = 404
x1 = (-22 + √404)/4
x1 = (-22 + 20,10)/4
x1 = -1,9/4
x1 = -0,475
x2 = (-22 - √404)/4
x2 = (-22 - 20,10)/4
x2 = -42,1/4
x2 = -10,525