📐 MathLevel 3 — 🟢 Basiccubic👁 15 views⏱ 1 min read
解题 方程 x² - 0x + -1 = 0 有两个实根 x₁, x₂。求 x₁ + x₂ 和 x₁·x₂(Vi-et 定理)。 — 详细解答步骤
📝 Problem
方程 x² - 0x + -1 = 0 有两个实根 x₁, x₂。求 x₁ + x₂ 和 x₁·x₂(Vi-et 定理)。✨Detailed Solution
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