Persamaan nilai mutlak |-3x+1|=2

Materi : Nilai Mutlak


|-3x + 1| = 2

(i)
-3x + 1 = 2
-3x = 1
x = -1/3

(ii)
-3x + 1 = -2
-3x = -3
x = 1

jadi HP = {-1/3 , 1}

|-3x+1|=2

-3x+1=2. -3x+1=-2
-3x= 2-1. -3x=-2-1
-3x = 1. -3x= -3
x=-1/3. x=-3/-3 =1

maka x1=-1/3 Dan x2=1