化简log3(4)*log4(5)*log5(8)*log8(9)的结果是?

化简log3(4)*log4(5)*log5(8)*log8(9)的结果是? 1.log2 3*log3 4*log4 5*log5 2 2.(log4 3+log8 3)8(log3 2+log9 利用换底公式求值：1.log2 25 ×log3 4 ×log5 9 2.（log4 3+log8 3）（log3 2+ log 2 3 * log3 4 * log4 5 *log5 2 化简 若log3^5 log5^7 log7^x=log4^2 log6^4 log8^6,求x=? (log4 3+log8 3)(log3 5+log9 5)(log5 2+log25 2)= [log2 (125) +log4(25)+log8(5)][log125(8)+log25(4)+log5(2)] [log2 (125) +log4(25)+log8(5)][log125(8)+log25(4)+log5(2) log3(2)*log5(3)*log8(5) log3(4)×log4(8)×log8(x)=log6(36) log3(4)*log4(5)*log5(6)*...*log80(81) log2 3 · log3 4 ·log4 5 ·log5 2 前面的是底数