1,333 prompts matching "A binary operation defined on the integers"
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Quiz: The product of the roots of a cubic
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Practice: Finding the third root of a cubic when two are known
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Explain Back: Forming a cubic equation whose three roots are given
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WAEC Prep: Finding a coefficient of a cubic given one of its roots
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Show All Working: Three roots in arithmetic progression in a cubic
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Common Mistakes: Three roots in geometric progression in a cubic
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Worked Example: Solving a quadratic inequality by sketching the parabola
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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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Learn: The meaning of n factorial, and how to evaluate it
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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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Learn: The meaning of n choose r, and how to evaluate it
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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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