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Rezolvati in multimea numerelor reale ecuatia:
X-2/4=9/x-2
Va rog frumos


Răspuns :

4•9=(x-2)^2

x^2 - 4x + 4 - 36 = 0

x^2 - 4x - 32 = 0

delta=16-4•(-32)=16+128=144 =>rad.delta=12

x1=(4-12)/2=(-4)

x2=(4+12)/2=8