himpunan dari |6+2x|=12

Bab Nilai Mutlak
Matematika SMA Kelas X

|6 + 2x| = 12

6 + 2x = 12
2x = 12 - 6
x = 6/2
x = 3

6 + 2x = -12
2x = -12 - 6
x = -18/2
x = -9

HP = { -9, 3 }

|6+2x|=12
☞ 6+2x=12
2x = 12-6
x = 3

☞ -(6+2x) = 12
-6-2x = 12
-2x = 12+6
-2x = 18
x = -9

HP = {3,-9}