Write the expression as the sum or difference of single logarithms. log18

A.  log187 - 2 log18- 2 log18y
B.  log187 - 2 log18- log18y
C. 5 log187 - 2 log18- log185 
D. log187 - log18- log18y


Answer: B

Mathematics

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A.

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C.

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