1,334 prompts matching "Use the quadratic formula on x^2 - 2x - 2 = 0"
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Common Mistakes: Three roots in geometric progression in a cubic
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Practice: Solving an inequality with the unknown in the denominator
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WAEC Prep: Writing a solution set in interval notation
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Worked Example: The number of arrangements of n different objects in a row
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Quiz: The number of arrangements of r objects chosen from n
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Practice: Arrangements when some of the objects are identical
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Explain Back: Arrangements in which two particular objects must stay together
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WAEC Prep: Circular permutations of n objects round a table
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Show All Working: Arrangements of the letters of a given word
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Practice: Choosing a committee that must contain one particular person
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Spot My Mistake: The identity that n choose r equals n choose n minus r
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Show All Working: Counting the handshakes, or the lines joining n points
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Common Mistakes: Selections in which at least one of a kind must appear
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Final Revision: Proving an identity by working on one side only
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Worked Example: Solving cos x equals a negative value, and finding both solutions
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Quiz: Solving tan x equals a given value, and the period of the tangent
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Spot My Mistake: Solving an equation by first applying a Pythagorean identity
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Show All Working: Solving a cos x plus b sin x equals c by the R method
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Final Revision: Losing solutions by dividing through by cos x
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Worked Example: The shape, period and range of the cosine curve
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