(log2 5+log4 125)log3 2/ log根号3 5=(log2 5+log4 125)log3 2/ log3 25=(log2 5+log4 125)log25 2=(log2 5+log2 5根号5)log25 2=log2 25根号5 *log25 2=lg2/lg25根号5 *lg25 /lg2 (换底公式）=log25 25根号5=log 5...