(2x - 1 )^2 = 9
(2x - 1 )^2 = 3^2
|2x - 1| = 3
1) 2x - 1 = 3
2x = 4|:2
x = 2
2) 1 - 2x = 3
2x = -2|:2
x = -1
(2x - 1 )^2 = 9
(2x - 1 )^2 = 3^2
|2x - 1| = 3
1) 2x - 1 = 3
2x = 4|:2
x = 2
2) 1 - 2x = 3
2x = -2|:2
x = -1