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log (2x+1)(x-3)=log (x²-7)
log (2x²-6x+x-3) = log (x²-7)
2x²-6x+x-3 = x²-7
2x²-6x+x-3 -x²+7= 0
x²-5x+4=0
(x-1)(x-4)
x=1 atau x= 4