log(3x)²=log4(6-x)
所以9x²=24-4x
9x²+4x-24=0
x=(-2±2√55)/9
真数3x>0,6-x>0
所以x=(-2+2√55)/9
2 log(3x)= log 4 +log(6-x)怎么求...急
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