Tentukan nilai x yg memenuhi persamaan bentuk |4x+3|=7

Bab Nilai Mutlak
Matematika SMA Kelas X

|4x + 3| = 7

(4x + 3)² = 7²
(4x + 3)² - 7² = 0
(4x + 3 + 7) (4x + 3 - 7) = 0
(4x + 10) (4x - 4) = 0

4x + 10 = 0
4x = - 10
x = -10/4
x = -5/4

4x - 4 = 0
x = 4/4
x = 1

HP = { -5/4, 1 }