Two disjoint intervals
Two disjoint intervals
5 marks
TGM Original
Solve |x2-4| 3, and hence state the solution of |x2-4|>3.
Solution:
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Answer:\(\le3:\ [-\sqrt7,-1]\cup[1,\sqrt7]\); \(>3:\ (-\infty,-\sqrt7)\cup(-1,1)\cup(\sqrt7,\infty)\).
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