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Dijelom fantomi | Partly phantoms #1

Odredi jedini par realnih brojeva (x,y) takav da zadovoljava jednadžbu (x+y)^2=(x+3)(y-3)? . Rješenje napišite u ovom obliku: x,y, bez razmaka.
Find the only pair of real numbers (x,y) such that they satisfy the equation (x+y)^2=(x+3)(y-3)?. Write the solution in this form: x,y , without space.