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Real Number System and Solution-Set Notation
Worksheet
Grade Level
Algebra II
ALG2.19 Real Number System and Solution-Set Notation
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Skill Level
🔴 Hard
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Mastery
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Because x
2
+ 1 never equals 0, what is the domain of q(x) = 1/(x
2
+ 1)?
A
(-infinity, infinity)
B
(-infinity, -1) U (-1, infinity)
C
[0, infinity)
D
(-1, 1)
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