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

Question 85

Multiple Choice

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

A) $x + 7$
B) $x - 7$
C) $| ( x - 7 ) ( x + 7 ) |$
D) $| x - 7 |$

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