简化2log (x + 4) – log(2x + 8) + log(x - 2)谢谢~

简化2log (x + 4) – log(2x + 8) + log(x - 2)谢谢~ 用换底公式简化[log(4)3+log(8)3][log(3)2+log(9)2]比人还在自学期间,越清楚越明白越好~ 已知log（2）[log（3)(log(4) x)] = log(3) [log(4) (log(2) y)]=0,求x+y的值 [( log(x^2) + log(x^4) )/ log(100 x)] = 4 求X log(0.5x)(2)-log(0.5x^3)(x^2)=log(0.5x^3)(4) (log(2)(x))^3-4(log(4)(x))^2+log(16)(x)=0 log(2)(x)log(2)(4x)-3log(2)(x)-12=0 2 log(3x)= log 4 +log(6-x)怎么求...急 已知log(2){log(3)[log(4)(x)]}=5^0,则x=? 对数 方程 求解1）8(10^-x)+10^x= 6 2）10^3x-4(10^x)= 0 + 简化题请检查..自己算了下,但是不太确定.1）8(10^-x)+10^x= 62）10^3x-4(10^x)= 0简化,请检查.2/3 log x + 1/3 log xy^3= log ( x^2/3) +log ( (xy^3)^1/3) = log (x^2/3) + 2log(m)y-log(m)x-log(m)z 若log底数2[log底数3(log底数4)]若log底数2[log底数3(log底数4（x）)]=log底数3[log底数4(log底数2(y))]=log底数4[log底数2(log底数3z)]=0,则x+y+z= log(x)4/5 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 log(2)(x+4)=3^x (log(2)125+log(2)25+log(8)5)*(log(125)2+log(25)4+log(5)8) 4^[log(2)3+log(4)8] log(2)9log(3)4等于