Simplify the Expression and Write the Answer Without Negative Exponents $\left( x ^ { - 7 } \right) ^ { - 3 }$

question 27

Multiple Choice

Simplify the expression and write the answer without negative exponents.
- $\left( x ^ { - 7 } \right) ^ { - 3 }$

• A) \(\frac { 1 } { x ^ { 10 } }\)
• B) \(\frac { 1 } { x ^ { 21 } }\)
• C) \(- x ^ { 10 }\)
• D) \(x ^ { 21 }\)

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