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log din baza3 (x²-6)=log(2x-3)

Răspuns :

DVA: 2x-3>0, 2x>3, x>3/2.
x^2-6=2x-3, x^2-2x-3=0, delta=16, x=2+4/2=3, x=2-4/2=-1, deci S={3}.