Find the Missing Factor or Exponent(s) $$\left( x ^ { ? } \right) ^ { 9 } = x ^ { 90 }$$

question 54

Multiple Choice

Find the missing factor or exponent(s) .
- $$\left( x ^ { ? } \right) ^ { 9 } = x ^ { 90 }$$

• A) 9
• B) 81
• C) 80
• D) 10

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Definitions:

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