1,334 prompts matching "Subtraction as an example of neither law"
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Learn: The union of two sets written in set-builder notation
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Quiz: The complement of a set within a stated universal set
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Practice: The difference of two sets, A minus B
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WAEC Prep: The number of elements in the union of two sets
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Worked Example: Testing whether a binary operation is closed on a given set
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Final Revision: Deciding whether a set under an operation forms a group
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Worked Example: Collecting like surds in a single sum
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Practice: Rationalising a denominator of the form root a
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WAEC Prep: Comparing the sizes of two surds without a calculator
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Common Mistakes: Solving an equation in which the unknown sits under a root
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Show All Working: Solving a logarithmic equation and rejecting the invalid root
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Common Mistakes: Solving an exponential equation using logarithms
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Final Revision: Sketching the graph of a logarithmic function
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Spot My Mistake: Forming a new equation whose roots are the reciprocals of the original
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Worked Example: Finding one over alpha plus one over beta
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Common Mistakes: Symmetric functions when the three roots of a cubic are involved
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Final Revision: Checking a symmetric-function answer by solving the equation outright
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Worked Example: Evaluating a polynomial by substitution
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Spot My Mistake: The factor theorem for a divisor of the form ax minus b
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Common Mistakes: Adding, subtracting and multiplying two polynomials
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