What is the least possible value of (xy-1)^2 + (x+y)^2 for all real numbers x, y?
Source: AMC 12A 2021
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Zach Marinovhttps://etonstem.com/author/zach
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Zach Marinovhttps://etonstem.com/author/zach
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Zach Marinovhttps://etonstem.com/author/zach
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