1,043 prompts matching "The distance connected particles travel before one reaches the floor"
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Final Revision: Why completing the square always works
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Worked Example: Substituting a, b and c into the quadratic formula correctly
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Explain Back: Leaving the roots of a quadratic in surd form
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Spot My Mistake: What the formula gives when the discriminant is nought
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Final Revision: A word problem solved with the quadratic formula
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Worked Example: The product of the roots as c over a
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Worked Example: The identity linking alpha squared plus beta squared to the sum and product
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Explain Back: The value of alpha minus beta, all squared
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Spot My Mistake: The value of alpha over beta plus beta over alpha
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WAEC Prep: Forming an equation whose roots are alpha plus one and beta plus one
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Worked Example: Substituting into the quadratic and tidying up
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Explain Back: Writing the answers as ordered pairs
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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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Worked Example: The discriminant used as the test for intersection
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Explain Back: The condition for the line never to meet the curve
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Spot My Mistake: Finding the values of c for which a line is a tangent
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Final Revision: The degree of the product of two polynomials
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Worked Example: The division algorithm for polynomials
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Final Revision: Writing the result of a polynomial division out in full
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