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I was given a hyperbola problem. It gave me the Foci of the hyperbola and the Difference of the focal radii but I still can't solve it. F1 (-1, 1) F2 (1, -1) Difference of Focal Radii 2

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How do you answer a question when you're given the foci and the sum of focal radii?

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What if the squared value is y?

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