soal mohon bantuannya tks

Melengkapkan Kuadrat

x² + 2x - 24 ≤ 0
x² + 2x + 1 ≤ 24 + 1
(x + 1)² ≤ 25
|x + 1| ≤ √25
-5 ≤ x + 1 ≤ 5
-5 - 1 ≤ x ≤ 5 - 1
-6 ≤ x ≤ 4

HP = {x| -6 ≤ x ≤ 4, x e R}