x² - 8x + 12 ≤ 0 ?????

Sistem Pertidaksamaan Linear
SMA kelas X

x² - 8x + 12 ≤ 0
(x - 6)(x - 2) ≤ 0

x - 6 = 0
x = 6

x - 2 = 0
x = 2

++++++( 2 ) ---------- (6) +++++++

HP = {x I 2 ≤ x ≤ 6 , x∈R}