=lg243/lg4-lg729/lg8
=5lg3/2lg2-6lg3/3lg2
=5lg3/2lg2-4lg3/2lg2
=lg3/lg4
=log4(3)
原式=lg12/lg4-lg6/lg2
=(2lg2+lg3)/2lg2-(lg3+lg2)/lg2
=-lg3/lg4
=log4(1/3)
log4 243 - log8 729=?log4 12 - log2 6=?
log4 243 - log8 729=?log4 12 - log2 6=?
数学人气：784 ℃时间：2020-03-30 12:40:39
优质解答
我来回答
类似推荐
猜你喜欢
- 1怎样用6.4.8.2运算等于24
- 2123456+234567+345678+456789+567890+678901+789012+890123+901234+12345
- 3为什么氢氧化银、碳酸铝、碳酸铁是三个不存在的物质
- 4We recommend that states provide loans at favorable rates..
- 5I'v got a terrible cold.I______(catch)from someone at work yesterday
- 6Dear.Thank you for love.But I don't know how,is when it comes time to select,how do I choose is correct?
- 7Harry doesn’t like wine. He says that he never___ it at home.
- 8亲们~我要一篇以《我的理想》为题的作文.800字
- 984×9.6+0.96×61.6怎么样简便算
- 10please help me to find the mistakes