himpunan penyelesaian |x+5| = 3 ??

Bab Nilai Mutlak
Matematika SMA Kelas X

|x + 5| = 3

x + 5 = 3
x = 3 - 5
x = -2

x + 5 = -3
x = -3 - 5
x = -8

HP = {-8, -2}

|x+5| = 3

kali positif + (x+5)=3
x + 5 = 3
x = 3 - 5
x = -2

kali negatif - (x+5)=3
-x - 5 =3
-x = 3 + 5
-x = 8
x = -8
jadi Hp = {(-2,-8)}