(log x)^2- log(3x-2)^2=2

2logx- 2log(3x-2)=2
logx-log(3x-2)=1
log (x/3x-2)=log10
x/(3x-2)=10
x=30x-20
-29x=20
x=20/29

2007-04-17 12:49:32 補充：
2logx- 2log(3x-2)=2logx-log(3x-2)=1log (x/3x-2)=log10x/(3x-2)=10x=30x-20-29x=-20x=20/29 另一個answer 20/31 好似唔岩...

唔好意思..
你個answer 係唔係錯ga..
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