( 1/2)LG 0.3 =( 1/2)LG(3/ 10)= LGì(3/ 10)= LGì(3)-LGì( 10)= LG。
1/2 is the root sign.
lg√27=lg(√3)^3=3lg(√3)√27=(√3)^3
lg8=lg2^3=3lg2
log4(8)=log4(4*2)=log4(4)
log4(2)= 1
1/2=3*( 1/2)
Then the total formula is lg√27.
lg8-log4(8)=3lg(√3)
3lg2- 1/2
1/2lg0.3
lg2=lg√(3)
lg2- 1/2
Then three.
Seeing this problem is so messy, I want to simplify it. If generalized, it can be eliminated in the future. It's important to dare to try.