3㏒3²－㏒3∧4/15＋㏒3∧2.7﹣5∧㏒5³

3㏒3²－㏒3∧4/15＋㏒3∧2.7﹣5∧㏒5³
3㏒3²－㏒3∧4/15＋㏒3∧2.7﹣5∧㏒5³

3㏒3²－㏒3∧4/15＋㏒3∧2.7﹣5∧㏒5³
3㏒3²－㏒3∧4/15＋㏒3∧2.7﹣5∧㏒5³
=3㏒3²+㏒3∧2.7/（4/15）﹣3
=3㏒3²+㏒3∧81/8-3
=3㏒3²+4-3㏒3²-3
=4-3
=1

3㏒3²－㏒3∧4/15＋㏒3∧2.7﹣5∧㏒5³
=6㏒3-4/15㏒3+2.7㏒3-5^(㏒5为底10为指数）^(-1/3)
=(6-4/15+2.7)㏒3-1/1000
=263/30㏒3-1/1000


希望能帮助到你，这题主要用到对数性质㏒3²=2㏒3

3㏒3²－㏒3∧4/15＋㏒3∧2.7﹣5∧㏒5³
=3㏒3²+㏒3∧2.7/（4/15）﹣3
=3㏒3²+㏒3∧81/8-3
=3㏒3²+4-3㏒3²-3
=4-3
=1
所以答案为1