2lg5+2/3lg8等于

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2lg5+2/3lg8等于
2lg5+2/3lg8等于

2lg5+2/3lg8等于
2lg5+2/3lg8
=2lg5+2/3×3lg2
=2lg5+2lg2
=2lg10
=2

2lg5+(2/3)lg8
=2lg5+2lg2
=2lg10
=2

2lg5=lg25,2/3lg8=lg4,lg25+lg4=lg100=2