log9[log8(log7x)]=0求x

若tanA、tanB是方程x^2-2(log8 72 + log9 72)x-log8 72·log9 72=0的两个根 计算:(log4 3+log8 3)×log9 √2=? (log2(3)+log8(9))x(log3(4)+log9(8)+log3(2)) 1.(log3 2+log9 2)(log4 3+log8 3) 2.已知log18 9=a.18^b=5.求log36 求x,y值.6log9^x+3log27^y=8log3^x+2log9^y=2 a=log9 2/3 b=log8 根号3 c=1/4 比较大小 (log4 3+log8 3)(log3 5+log9 5)(log5 2+log25 2)= 【（log4）^3+.（log8）^3】【.（log3）^2+.（log9）^2】=几啊 若log2^3×log3^4×log4^x=log9^3 ,求x Log2⒊log3⒋log4ⅹ=log9⒊求x的值 计算log9(根号2)*[log4(3)+log8(3)] 化简(log4(3)+log8(3))(log3(2)+log9(2))