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13 February, 09:45

Solve 2 log x = log 64.

A. x = 8

B. x = ±8

C. x = 32

D. x = 128

+2
Answers (1)
  1. 13 February, 10:27
    0
    2 log x is the same as log x².

    So x²=64, so x=8. Not - 8 because log of negative number is undefined.

    Answer A.
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