|-x+1| 4=8 Mohon bantuannya

|-x+1| 4 = 8
|-x+1| = 8-4
(-x+1)^2 = 4^2
x^2-2x+1 = 16
x^2-2x-15 = 0
(x-5 )(x+3) = 0
x-5 = 0
x = 5
x+3 = 0
x = -3
Hp {5, -3}

note: ^ maksudnya pangkat