log4(3)-log4(12)-log8(4) =log4(3/12)- log8( 8^(2/3) ) log8( 8^(2/3) )怎么得出来的?

log4 求证：log4 3*log4 5 (log2 5+log4 125)log3 2/ log根号3 5 解方程log4（3x+1）=log4x+log(3+x)最后是log4（3+x) 2^log4(3) log4(3x-2) 2^log4^3=? (1/4)^log4(3) log4^27×log(8)25×log9^5 log4^27×log(8)25×log9^5 log (log2)^2 - (log4)(log20) + (log20)^2 如题{log(2√2) - 3log√3 - 3} / {log9 - log4 + 4} log4 (x+3)+log(1/4) (x-3)=log(1/4) (x-1)+log4 (2x+1)的解集, log4 243 - log8 729=?log4 12 - log2 6=? log4 3 和log4/3 3/4 谁大 解方程log4 x+1/log4 x=10/3 [log3（4）+log根下3（2）][log2(9)+log4(根3)] log 底数是4根号3 真数是81 log4根号3 81 最好有分析!