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If log(10)2=a\ and log(10)3=b, then log5...

If `log_(10)2=a\ and log_(10)3=b,` then `log_5 12` equals a. `(a+b)/(1+a)` b. `(2a+b)/(1+a)` c. `(a+2b)/(1+a)` d. `(2a+b)/(1-a)`

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