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Simplify the Expression $- \sqrt { 49 x ^ { 8 } }$

Question 5

Multiple Choice

Simplify the expression.
- $- \sqrt { 49 x ^ { 8 } }$

A) $\left| 7 x ^ { 4 } \right|$
B) $- \left| 49 x ^ { 4 } \right|$
C) $- 7 x ^ { 8 }$
D) $- \left| 7 x ^ { 4 } \right|$

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