penyelesaian persamaan I 3 x + 8 I = I x +8 I

Bab Nilai Mutlak
Matematika SMA Kelas X

|3x + 8| = |x + 8|

(3x + 8)² = (x + 8)²
(3x + 8)² - (x + 8)² = 0
(3x + 8 + x + 8) (3x + 8 - x - 8) = 0
(4x + 16) (2x) = 0
4x + 16 = 0          atau          2x = 0
4x = -16                                x = 0
x = -4

HP = { -4,0 }