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lg (x la a 2 -4x+2)=lg (x-2)


Răspuns :

Lg (x la a 2 -4x+2)=lg (x-2)

x^2-4x+2=x-2
x^2-5x+4=0 
(x-1)(x-4)=0 => x=1; x=4 dar x>2 => R: x=4