|3+2x| < |4-x| mohon bantuannya yaa

Bab Nilai Mutlak
Matematika SMA Kelas X

|3 + 2x| < |4 - x|

(3 + 2x)² < (4 - x)²
(3 + 2x)² - (4 - x)² < 0
(3 + 2x + 4 - x) (3 + 2x - 4 + x) < 0
(x + 7) (3x - 1) < 0
-7 < x < 1/3

HP = { x | -7 < x < 1/3, x ∈ bilangan real }