log(x.8)-3log(8,x)=2 要X

log（x+5）=log（x）+log（2） log（8）+log（x）=log（24） 2log（x）=log(2x)+log(3) log数学题,求救!高中水平就可以!log(x+8)-log2=log(3x+2)求x. [log(4)(2x)][log(2x)(3y)][log(3y)(z)]=log(8x)[(8x)]^2,则z=? log(x.8)-3log(8,x)=2 要X 已知log(8)[log(3)X]=0,那么X^(-1/2)= log(0.5x)(2)-log(0.5x^3)(x^2)=log(0.5x^3)(4) 试解关于x的不等式log(2)x+4log(3)x+12log(8)x+n·2^(n-1)·log(2^n)x a,b,x 都是正数,4[log(a)x]²+[3log(b)x]²=8log(a)x*log(b)x,则a,b的关系 对数计算1.{log(4)（3）+ log(8) (3)} X {log(3)(2)+log(9)(2)}2.{log(2)(3)} X {log(3)(4)+log(9)(2)}3.(lg2)^+1g2X 1g5 +1g50 简化2log (x + 4) – log(2x + 8) + log(x - 2)谢谢~ log(2)(x)log(2)(4x)-3log(2)(x)-12=0 (log(2)(x))^3-4(log(4)(x))^2+log(16)(x)=0 无穷等比数列log(8)x,log(8^2)x,log(8^3)x……各项之和为1/2,则x=, log(1/8)X 已知log（2）[log（3)(log(4) x)] = log(3) [log(4) (log(2) y)]=0,求x+y的值 log 8下标 （X-6）+ log 8小标 （x+6)=2 求X 已知log(2){log(3)[log(4)(x)]}=5^0,则x=? 2 log(3x)= log 4 +log(6-x)怎么求...急