1.
+ -4 - 0 + 2 - 9 +
x ∈ [-4; 0] ∪ [2; 9]
2.
- -2 + -3 - 5 +
x ∈ [-2; -3] ∪ [5; ∞)
3.
+ -2 - 1/2 + 1 +
x ∈ [-2; 1/2]
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Answers & Comments
1.
+ -4 - 0 + 2 - 9 +
x ∈ [-4; 0] ∪ [2; 9]
2.
- -2 + -3 - 5 +
x ∈ [-2; -3] ∪ [5; ∞)
3.
+ -2 - 1/2 + 1 +
x ∈ [-2; 1/2]