1,045 prompts matching "IGCSE Additional Maths Y10: The solution set lying between the roots — Worked Ex"
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Worked Example: Substituting a, b and c into the quadratic formula correctly
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WAEC Prep: What the formula gives when the discriminant is negative
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Show All Working: Choosing between factorising and the formula
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Common Mistakes: A sign error in the formula, and how to catch it
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Worked Example: The product of the roots as c over a
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WAEC Prep: Checking the sum and product against the solved roots
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Common Mistakes: Roots that are reciprocals of one another
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Worked Example: The identity linking alpha squared plus beta squared to the sum and product
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Common Mistakes: A symmetric function needing the sum and product twice over
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Worked Example: Substituting into the quadratic and tidying up
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Spot My Mistake: A pair with equal roots, meaning one solution only
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Show All Working: A simultaneous pair in which the second equation is a circle
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Final Revision: Checking both solutions in both equations
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Worked Example: The discriminant used as the test for intersection
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WAEC Prep: Finding the values of m for which a line cuts a curve twice
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Show All Working: The point of contact when a line touches a curve
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Common Mistakes: A line and a curve meeting once without the line being a tangent
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Worked Example: The degree of a polynomial in one variable
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Worked Example: The division algorithm for polynomials
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WAEC Prep: Dividing by a factor of the form ax plus b
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