Question

Rezolvati in multimea numerelor reale ecuatia urmatoare
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Answer 1

Conditii de existenta

x-1>0

x²-x-4>0

$log_{x-1}(x^2-x-4)=2\\\\(x-1)^2=x^2-x-4\\\\x^2-2x+1=x^2-x-4\\\\5=x$