Find the minimum value of $x^2 + y^2,$ where $x$ and $y$ are real numbers such that $x^2 + y^2 = 4xy.$
Question:
Find the minimum value of $x^2 + y^2,$ where $x$ and $y$ are real numbers such that $x^2 + y^2 = 4xy.$
Answer:
Let's think step by step.

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Find the minimum value of $x^2 + y^2,$ where $x$ and $y$ are real numbers such that $x^2 + y^2 = 4xy.$
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