1 log (x2+3x+12) =1
2 logx)2 +3 logx=4 )
1 log (x2+3x+12) =1
2 logx)2 +3 logx=4 )
x=-1 , x=-2 , 1 10 10 (x^2+3x+12)
x^2+3x+12-10=0 ,
2log x - log (5-4x) =1 3
: 1 (0 1 )
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