Use the Definition of a Logarithm to Solve Logarithmic Equations $\log _ { 9 } \left( x ^ { 2 } - 8 x \right) = 1$

question 69

Multiple Choice

Use the Definition of a Logarithm to Solve Logarithmic Equations
Solve the logarithmic equation. Be sure to reject any value that is not in the domain of the original logarithmic
expressions. Give the exact answer.
- $\log _ { 9 } \left( x ^ { 2 } - 8 x \right) = 1$

• A) \(\{ 9 , - 1 \}\)
• B) \(\{ - 9,1 \}\)
• C) \(\{ 9 \}\)
• D) \(\{ 1 \}\)

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