5^log25^49等于?5的log25的49=?

5^log25^49等于?5的log25的49=? log25 5等于多少 5^log25(lg2的平方+lg2.5)=? 5^log25(lg2-1)^2=? 5^(log25((lg2^2)+lg5/2)) 2^(log4^12)-3^(log9^27)+5^(log25^1/3)等于多少? (log2底5+log4底0.2)(log4底2+log25底0.4)的值是 计算(log5^3+log25^3)(log9^5+log27^5) 计算[log9(5)+log3(5)]乘[log25(3)+log125(9)] 求(log2 5+log4 0.2)(log5 2+log25 0.5) log2^3 x log9^5 x log25^8 (log2^5+log4^0.2)(log5^2+log25^0.25)化简 已知6的a次方=5,则log25/log6等于?A.1/a B.a C.2/a D.2a 求过程 log25 3 为什么等于log5^3 2^log4底12减3^log9底27加5^log25底1/3的值 log3 5=a log3 7 =b 求log25 7这里没看懂是怎么变形的 [log2 (125) +log4(25)+log8(5)][log125(8)+log25(4)+log5(2)][log2 (125) +log4(25)+log8(5)][log125(8)+log25(4)+log5(2) 计算log^2 (log2^16)+7^（log7^49）-2log25^125的值