Tentukan persamaa nilai mutlak 2|2x+1|=4

Materi : Nilai Mutlak
Kelas : X SMA

2I2x + 1I = 4
I2x + 1I = 4/2
I2x + 1I = 2
2x + 1 = 2 atau -2

2x + 1 = 2
2x = 2 - 1
2x = 1
x = 1/2

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

Hp = {-3/2 atau 1/2 }