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The Discriminant Method in Extreme Values Problem (Short Version)

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The discriminant is the key value to determine the roots of a quadratic equation. b²-4ac. The discriminant tells us whether there are two real solutions, one solution, or no solutions (in real numbers).
The discriminant is the key value to determine the roots of a quadratic equation. b²-4ac. The discriminant tells us whether there are two real solutions, one solution, or no solutions (in real numbers).