( log8^9 )/( log2^3 )求值

log8(9)*log2(3) log8(9)除以log2(3) (log8 9/log2 3)=? 求(log2^3+log8^9) log8^9/log2^3的值是 log8 9/log2 3的值是? 利用换底公式求值：1.log2 25 ×log3 4 ×log5 9 2.（log4 3+log8 3）（log3 2+ 1.求值:log8^9/log2^3=?2.设lg2-a,lg3=b,求lg根号54. 求值：【log2（3）+log4（9）+log8（27）+log16（81）+log32（243）】—5log2（3/2 求值：(log4(3)+log8(3))(log3(2)+log3(4))-log2(64) 已知log2^3=a.则log8^3= log8^9= log8ˇ9除以log2ˇ3 等于?