2log5(25)-3log2(64) 如题`怎么做?

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2log5(25)-3log2(64)如题`怎么做?2log5(25)-3log2(64)如题`怎么做?2log5(25)-3log2(64)如题`怎么做?2log5(25)-3log2(64)=2l

2log5(25)-3log2(64) 如题`怎么做?
2log5(25)-3log2(64)
如题`怎么做?

2log5(25)-3log2(64) 如题`怎么做?
2log5(25)-3log2(64)
=2log5(5^2)-3log2(2^6)
=2*2log5(5)-3*6log2(2)
=4*1-18*1
=-14

4-27

2乘以2-3乘以6=-14

2log5(25)-3log(64)=2log5(5^2)-3log2(2^6)=4log5(5)-18log2(2)=4-18=-14