Sagot :
Bonjour,
(x-3)^2-x^2=-3x
x^2-2x*3+3^2-x^2=-3x
-6x+9=-3x
-6x+3x=-9
-3x=-9
x=-9/-3
x=3
Bonjour
( x - 3)^2 - x^2 = - 3x
x^2 - 6x + 9 - x^2 = - 3x
- 6x + 9 = - 3x
- 6x + 3x = - 9
- 3x = - 9
x = 3
S = { 3}
Bonjour,
(x-3)^2-x^2=-3x
x^2-2x*3+3^2-x^2=-3x
-6x+9=-3x
-6x+3x=-9
-3x=-9
x=-9/-3
x=3
Bonjour
( x - 3)^2 - x^2 = - 3x
x^2 - 6x + 9 - x^2 = - 3x
- 6x + 9 = - 3x
- 6x + 3x = - 9
- 3x = - 9
x = 3
S = { 3}