Find the Value of the Expression $\log _ { b } A = 4$

question 138

Multiple Choice

Find the value of the expression.
-Let $\log _ { b } A = 4$ and $\log _ { b } B = - 5$ . Find $\log _ { b } 2 \sqrt { A B }$ .

• A) \(- 0.500\)
• B) \(- 4.472\)
• C) \(4.472\)
• D) \(2 \sqrt { - 20 }\)

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