|2x+4| = x +5 Mempunyai himpunan penyelesaian

|2x + 4| = x + 5
=> (2x + 4)^2 = (x + 5)^2
=> 4x^2 + 16x + 16 = x^2 + 10x + 25
=> 3x^2 + 6x – 9 = 0
=> x^2 + 2x – 3 = 0
=> (x + 3)(x – 1) = 0
=> x = -3 atau x = 1
HP = {-3, 1}

2x + x = 4 + 5
2x = 20
x= 20/2= 10
Maaf kalau salah masih belajar juha