2log5(25)+3log2(64)-8ln1等于多少

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2log5(25)+3log2(64)-8ln1等于多少
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2log5(25)+3log2(64)-8ln1等于多少
2log5(25)+3log2(64)-8ln1等于多少

2log5(25)+3log2(64)-8ln1等于多少
2log5(25)+3log2(64)-8ln1
=2log5(5)^2+3log2(2)^6-8ln1
=2*2+3*6-0
=4+18
=22

2log5(25)=2log5(5^2)=2*2=4
3log2(64)=3log2(2^6)=3*6=18
8ln1=0
4+18+0=22