1,311 prompts matching "What the factor theorem says about the roots"
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Spot My Mistake: De Morgan's law that the complement of a union is the intersection of the complements
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WAEC Prep: The number of elements in the union of two sets
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Final Revision: The power set, and how many subsets a set of n elements has
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Worked Example: Testing whether a binary operation is closed on a given set
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Spot My Mistake: Finding the inverse of an element under a binary operation
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Final Revision: Deciding whether a set under an operation forms a group
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Quiz: Multiplying two surds and simplifying the result
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WAEC Prep: Comparing the sizes of two surds without a calculator
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Quiz: Solving an index equation by writing both sides to the same base
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Spot My Mistake: The power law of logarithms
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WAEC Prep: The change of base formula for logarithms
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Final Revision: Sketching the graph of a logarithmic function
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Show All Working: Solving a quadratic by completing the square
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Practice: Finding alpha minus beta from the sum and the product
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Final Revision: Checking a symmetric-function answer by solving the equation outright
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Final Revision: The zeros of a polynomial and where its graph cuts the x-axis
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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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Spot My Mistake: Showing the solution of an inequality on a number line
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Common Mistakes: The range of values of x for which an expression stays positive
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