x^2 + (a - x)^2 + x^2 = 2a^2 \quad \Rightarrow \quad x^2 + a^2 - 2ax + x^2 + x^2 = 2a^2 \quad \Rightarrow \quad 3x^2 - 2ax + a^2 = 2a^2 \quad \Rightarrow \quad 3x^2 - 2ax - a^2 = 0

Wed, 06 May 2026 22:13:40 +0000

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