Simplify Assume That All Variables Represent Any Real Number $$\sqrt { x ^ { 2 } + 18 x + 81 }$$

question 89

Multiple Choice

Simplify. Assume that all variables represent any real number.
- $$\sqrt { x ^ { 2 } + 18 x + 81 }$$

• A) \(x + 9\)
• B) \(- x - 9\)
• C) \(| x + 9 |\)
• D) \(- | x + 9 |\)

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