persamaan dengan cara aljabar mtk kelas x |x-4|-2=7

Bab Nilai Mutlak
Matematika SMA Kelas X

|x - 4| - 2 = 7
|x - 4| = 7 + 2
|x - 4|= 9
(x - 4)² = 9²
(x - 4)² - 9² = 0
(x - 4 + 9) (x - 4 - 9) = 0
(x + 5) (x - 13) = 0
x + 5 = 0 atau x - 13 = 0
x = -5              x = 13

HP = { -5, 13 }