1,043 prompts matching "Three roots in arithmetic progression in a cubic"
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Learn: The sum of the roots as minus b over a
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Explain Back: Finding a missing coefficient from a stated sum of roots
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Spot My Mistake: Finding a missing coefficient from a stated product of roots
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WAEC Prep: Checking the sum and product against the solved roots
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Show All Working: Roots equal in magnitude but opposite in sign
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Learn: What makes an expression in the roots symmetric
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WAEC Prep: Forming an equation whose roots are alpha plus one and beta plus one
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Spot My Mistake: A pair with equal roots, meaning one solution only
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Learn: Setting out the division of a cubic by a linear expression
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Show All Working: What the factor theorem says about the roots
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Worked Example: Factorising a cubic into a linear and a quadratic factor
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Show All Working: Factorising a polynomial with fractional roots
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Learn: Solving a cubic once it has been factorised
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Spot My Mistake: Finding the remaining roots once one is known
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Show All Working: Solving a cubic that must first be rearranged
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Common Mistakes: A cubic equation arising from a volume problem
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Final Revision: A compound proposition built from three simple ones
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Worked Example: Conjunction in a three-variable truth table
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WAEC Prep: A truth table with three propositions in it
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IGCSE Additional Maths Y11: Proving three points collinear using vectors — Explain It Back
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