Persamaan x yang memenuhi persamaan |x-1|+|x-3|=2

|x-1| + |x-3| = 2
|x-1|^2 + |x-3|^2 = 2
(x-1) (x-1) . (x-3) (x-3)
(x-1) + (x-3) . (x-1) + (x+3)
(2x+4) . (2x -2)
2x+4 = 2 2x-2 = 2
2x = 2-4 2x = 2+2
2x = -2 2x = 4
x = -2/2 x = 4/2
x = -1 x = 2