|2×+4|+3 = 9 pakai cara

| 2x + 4 | + 3 = 9
2× + 4 = 9 -3
2× +4 = 6
=> f(×) = a
2× + 4 = 6
2× = 6 - 4
× = 2 / 2
× = 1
=> f(×) = - a
2× +4 = - 6
2× = -6 -4
× = -10 / 2
× = -5
Hp = { 1 , -5 }