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Mathematics
Jeffery Humphrey
10 August, 08:05
Write the set using interval notation.
x ≠ - 2, 8
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Monique Boyer
10 August, 09:10
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As a set it tells that x can be anything but - 2 and 8. For - 2, we write our interval so that it includes everything but 2.
(-∞, - 2) ∪ (-2, ...)
We use the union because it could be in one interval or the other, and we use parentheses to exclude - 2. Now we repeat it with 8.
( - ..., 8) ∪ (8, ∞).
Lastly we put both together.
The set in interval notation is (-∞, - 2) ∪ (-2, 8) ∪ (8,∞)
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