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2log5 10+log5 0.25等于多少

2log5^10+log5^0.25 =2lg10/lg5+lg0.25/lg5 =lg100/lg5+lg0.25/lg5 =(lg100+lg0.25)/lg5 =lg25/lg5 =2lg5/lg5 =2 希望对您有所帮助 如有问题,可以追问。 谢谢您的采纳

2 追问: 麻烦能写点过程么、? 回答: 2log5 10=log5 100 所以原式=log5 (100*0.25)=log5 5^2=2log5 5=2 满意请采纳

2 因为利用对数的运算性质可知,2log 5 10+log 5 0.25=log 5 100 0.25=2.故填写2.

“数理答疑团”为您解答,希望对你有所帮助。 2log5+log4+ln√e =log5²+log4+lne^(1/2) =log(25×4)+(1/2)lne =log10²+(1/2)lne =2+1/2 =2.5 如果你认可我的回答,敬请及时采纳, ~如果你认可我的回答,请及时点击【采纳为满意回答】按钮 ...

解:2log5(10)+log5(0.25) =log5(100*0.25) =log5(25) =2

2log5(10)+log5(0.25) =log5(100))+log5(1/4) =log5(100×1/4) =log5(5²) =2

1)2log510+log50.25=log5(10^2* 0.25)=log5(25)=2;

(1)原式=log(102×0.25)5-log323=log525-2=0;(2)原式=0.25×16?4?3?2×(?12)=4-4-3=-3.

a=(lg2)+(lg5)+lg4lg5+2log510+log50.25 =(lg2)+(lg5)+2lg2lg5+log5100+log50.25 =(lg2+lg5)+log5(100*0.25)=1+2=3 b=(log2125+log85)×log52 =(lg125/lg2+lg5/lg8)×(lg2/lg5) =(3lg5/lg2+lg5/(3lg2))×(lg2/lg5) =lg5/lg2=...

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