log3(x-1)=log9(x-5) 求x

由换底公式怎么得到log9(x+5)=log3[2（x+5)]=1/2log3(x+5) 填空题：方程log3(x-1)=log9(x+5)的解是____________ 求x,y值.6log9^x+3log27^y=8log3^x+2log9^y=2 若log2^3×log3^4×log4^x=log9^3 ,求x Log2⒊log3⒋log4ⅹ=log9⒊求x的值 (log2^3 +log3^5) x ( log3^5 +log9^5 ) x lg 2 , (log2(3)+log8(9))x(log3(4)+log9(8)+log3(2)) 解不等式:log3^(5+x)+log3^(x-1)≤3 求对数方程根log3为底(x^2-10)=1+log3为底x 求函数y=log3 (3x)*log3 (x/9) (1/3 求函数y=(log3 x)^2+(2log3 x)+1的定义域和值域. log3^x=log4^x求x值