446 prompts matching "Solving a quadratic that must be rearranged before factorising"
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Common Mistakes: Expressing root 50 as a multiple of root 2
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Spot My Mistake: Dividing one surd by another
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Common Mistakes: Expanding the product of two surd brackets
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Spot My Mistake: Rationalising and then cancelling a common factor
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Show All Working: Checking a rationalised answer by decimal approximation
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Common Mistakes: Rationalising a denominator of the form root a over root b
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Show All Working: A conjugate where the surd term comes first
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Common Mistakes: Rationalising when both terms of the denominator are surds
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Show All Working: Finding a and b when a plus b root 2 equals a given surd
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Spot My Mistake: A binary operation defined on a set of three elements
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Show All Working: Evaluating a repeated operation such as a*(b*c)
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Spot My Mistake: Reading closure off an operation table
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Show All Working: Showing a set is not closed by a single counter-example
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Common Mistakes: Closure on a set of three elements under a stated rule
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Spot My Mistake: Testing (a*b)*c against a*(b*c)
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Common Mistakes: Subtraction as an example of neither law
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Spot My Mistake: Checking distributivity from two operation tables
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Show All Working: Using distributivity to simplify an expression
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Common Mistakes: Distributivity on a set of three elements
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Spot My Mistake: Finding the inverse of a given element
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