RÉSOLOUS LES ÉQUATIONS SUIVANTES:
a. (5x+1) (8-x) = 0
b. (3x-1) + (7-x) = 0
c. (8+3x) - (x+3) = 0
d. (3-10x) (x+23) = 0
e. 6(y+3) - 2(y-1) = 0
a. (5x+1) (8-x) = 0
b. (3x-1) + (7-x) = 0
c. (8+3x) - (x+3) = 0
d. (3-10x) (x+23) = 0
e. 6(y+3) - 2(y-1) = 0
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Bonsoir,a. (5x+1) (8-x) = 0
5x + 1 = 0 ou 8 - x = 0
5x = - 1 ou x = - 8
x = - 1/5
b. (3x-1) + (7-x) = 0
3x - 1 + 7 - x = 0
3x - x = 1 - 7
2x = - 5
x = - 5/2
x = - 2,5
c. (8+3x) - (x+3) = 0
8 + 3x - x - 3 = 0
3x - x = - 8 + 3
2x = - 6
x = - 6/2
x = - 3
d. (3-10x) (x+23) = 0
- 10 + 3x = 0 ou x + 23 = 0
3x = 10 ou x = - 23
x = 10/3
e. 6(y+3) - 2(y-1) = 0
6y + 18 - 2y + 2 = 0
6y - 2y = - 18 - 2
4y = - 20
y = - 20/4
y = - 5