|×+4|-2=10 Persamaan nilai mutlak

Jawaban :

x = 8, -16

Penjelasan :

|x + 4| – 2 = 10

|x + 4| = ± 12

x = ±12 – 4

x = 12 – 4

x = 8

x = -12 – 4

x = – 16

Mari kita buktikan.

x = 8

|8 + 4| – 2 = 10

12 – 2 = 10

10 = 10

x = -16

|-16 + 4| – 2 = 10

|-12| – 2 = 10

12 – 2  = 10

10 = 10