1,326 prompts matching "completing the square when the coefficient of x squared is not one"
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Worked Example: The intersection of two overlapping sets
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Practice: The difference of two sets, A minus B
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Explain Back: The symmetric difference of two sets
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Worked Example: Testing whether a binary operation is closed on a given set
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Explain Back: Finding the identity element of a binary operation
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Final Revision: Deciding whether a set under an operation forms a group
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Explain Back: The laws of logarithms for a product and for a quotient
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Explain Back: The range of values of k for which the roots are real
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Final Revision: Checking a symmetric-function answer by solving the equation outright
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Explain Back: Finding an unknown coefficient given that a stated factor divides the polynomial
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Worked Example: The sum of the products of the roots of a cubic taken two at a time
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Worked Example: The number of arrangements of n different objects in a row
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Final Revision: Counting the number plates or codes that can be formed under a rule
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Spot My Mistake: The identity that n choose r equals n choose n minus r
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Final Revision: Combinations used with the addition and multiplication principles
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Practice: The compound angle formula for cosine of A minus B
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Explain Back: The compound angle formula for tan of A plus B
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Spot My Mistake: The double angle formula for sine
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Practice: Solving an equation of the form sin of 2x equals a given value
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Worked Example: The shape, period and range of the cosine curve
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