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Is \(xy = -1 ?\)
(1) \(x = y\)
(2) \(y= 1\)
[spoiler]OA=A[/spoiler]
Source: Veritas Prep
(1) \(x = y\)
(2) \(y= 1\)
[spoiler]OA=A[/spoiler]
Source: Veritas Prep
