Simplify $\sqrt { x ^ { 2 } - 14 x + 49 }$

question 27

Multiple Choice

Simplify $\sqrt { x ^ { 2 } - 14 x + 49 }$ . Assume all variables are unrestricted and use absolute value symbols when necessary.

• A) x-7
• B) \(( x - 7 ) ^ { 2 }\)
• C) 7|x|
• D) | x-7|

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