Find the Domain of X in the Expression $\sqrt { x ^ { 2 } - 4 }$

question 56

Multiple Choice

Find the domain of x in the expression.​ $\sqrt { x ^ { 2 } - 4 }$ ​

• A) \(( - \infty , 2 ] \cap [ 2 , \infty )\)
• B) \(( - \infty , - 2 ] \cup [ 2 , \infty )\)
• C) \(( - \infty , - 2 ] \cap [ 2 , \infty )\)
• D) \(( - \infty , 2 ] \cup [ 2 , \infty )\)
• E) \(( - \infty , - 2 ) \cup [ 2 , \infty )\)

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