1.log18/25(2/5)2.log4 27×log8 25×log9 5( 8和25是上下并列写的,

已知log18 9=a,log18 5=b,用a,b表示log 36 45. log36 (45)=log18(45)/log18(36) =(log18 5+log18 9)/(log18 18 +log18 2) =(a+b)/(2-a)没理解 计算（log36(4))/(log18(6))+log^2 6(3) (log36(4))/log18(6)+log^2 6(3)= 1.log18/25(2/5)2.log4 27×log8 25×log9 5( 8和25是上下并列写的, 已知log18 9=a,18^b=5,用a,b表示log(36)5 已知log18 9=a,18^b=5,用a,b表示log(36)5 已知log18 9=a,18^b=5,用a,b表示log(36)45 已知log18 9=a,18^b=5,用a,b表示log(36)45 已知log18 9=a,18^b=5,用a,b表示log(18)45 已知log18 9=a,18b=5,求log(30) 36= log36(4)/log18(6)+log^2 6(3)=答案是1 化简 (log36(4))/(log18(6))+log^2 6(3)log^2 6(3) 以6为底 3为真数 若log18 9=a ,18 ^b =5,用a,b表示log小36 大45? (log(2)125+log(2)25+log(8)5)*(log(125)2+log(25)4+log(5)8) 1.求值25^log(5)^3+lg100+log(1/2)4.2.9^log(3)^5的值为（ ）.A.5 B.15 C.25 D.453.计算log(2)2+log(5)1-log(1/3)1/27+[3^log(3)5]^2+3^log(3)2. 若 log18 2=m,则log18 72=______ log(4)25-2log(4)10+log(4)5*log(5)16