1,045 prompts matching "Evaluating a function at a given value"
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Common Mistakes: Checking a completed square by expanding it again
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Final Revision: Why completing the square always works
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Practice: Giving the roots correct to two decimal places
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Show All Working: Choosing between factorising and the formula
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Learn: The sum of the roots as minus b over a
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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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Show All Working: Roots equal in magnitude but opposite in sign
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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: 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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Worked Example: The discriminant used as the test for intersection
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Quiz: The condition for two points of intersection
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Practice: The condition for the line to be a tangent
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Explain Back: The condition for the line never to meet the curve
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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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Final Revision: A word problem about a line and a parabola
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Worked Example: The degree of a polynomial in one variable
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Quiz: The leading term and the constant term
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