數學公式與先修概念大師測驗

公式原理與先修概念鏈條實戰測驗

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What is the discriminant condition D for ax² + bx + c = 0 (a ≠ 0) to have two distinct real roots?

ax^2 + bx + c = 0 \implies x = \frac{-b \pm \sqrt{D}}{2a}