1,045 prompts matching "IGCSE Additional Maths Y10: A quadratic in root x — Worked Example"
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Learn: What makes an expression in the roots symmetric
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Worked Example: The identity linking alpha squared plus beta squared to the sum and product
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WAEC Prep: Forming an equation whose roots are alpha plus one and beta plus one
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Show All Working: Forming an equation whose roots are three alpha and three beta
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Quiz: Solving the quadratic that results from the substitution
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Spot My Mistake: A pair with equal roots, meaning one solution only
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Common Mistakes: A word problem giving one linear and one quadratic equation
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Learn: Forming the quadratic that decides where a line meets a curve
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Worked Example: The discriminant used as the test for intersection
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Worked Example: The degree of a polynomial in one variable
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Quiz: Dividing a quartic by a quadratic
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Worked Example: The remainder on dividing by x minus 3
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Worked Example: Testing a list of candidates to find a factor
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Show All Working: What the factor theorem says about the roots
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Practice: Factorising a quartic as the product of two quadratics
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Show All Working: Factorising a polynomial with fractional roots
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Quiz: A cubic with three distinct real roots
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Explain Back: A cubic with a repeated root
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Spot My Mistake: Finding the remaining roots once one is known
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Final Revision: Checking a root of a cubic by substitution
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