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Core 1 - Quadratic Functions (4) - The Discriminant - nature of roots - b^2-4ac AS maths (ukmathsteacher) View |
Discriminant of Quadratic Equation and Nature of Roots (Math With Cal) View |
Discriminant and the Nature of Roots of Quadratic Equations (MATH TEACHER GON) View |
What is the discriminant and what does it mean (Brian McLogan) View |