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kuing 发表于 2024-2-10 14:10 k=0.8 时原式分解为 \[\left(x^2+\frac{3+\sqrt5}2y^2-1-\frac1{\sqrt5}\right)\left(x^2+\frac{3-\sqrt5}2 ...
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2025-7-15 14:15 GMT+8
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