Proszę o najdzybsze rozwiązanie
Ix+2I / 2 ≤ Ix+2I - 2 /·2
Ix+2I ≤ 2Ix+2I - 4
Ix+2I - 2Ix+2I ≤ -4
- Ix+2I ≤ -4 /·(-1)
Ix+2I ≥ 4
x+2 ≥ 4 ∨ x+2 ≤ -4
x ≥ 2 x ≤ -6 ----------------- -----------------
I I
------------------------------------------->
-6 2
Odp. x∈ (-∞,-6> U <2, ∞)
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Ix+2I / 2 ≤ Ix+2I - 2 /·2
Ix+2I ≤ 2Ix+2I - 4
Ix+2I - 2Ix+2I ≤ -4
- Ix+2I ≤ -4 /·(-1)
Ix+2I ≥ 4
x+2 ≥ 4 ∨ x+2 ≤ -4
x ≥ 2 x ≤ -6 ----------------- -----------------
I I
------------------------------------------->
-6 2
Odp. x∈ (-∞,-6> U <2, ∞)