611 prompts matching "A pair with equal roots, meaning one solution only"
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Spot My Mistake: The decimal expansion of an irrational number, and why it never repeats
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Final Revision: Approximating a surd to three decimal places
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Learn: What makes two surds similar
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Final Revision: Surds that cannot be combined at all
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Final Revision: Simplifying a fraction whose numerator and denominator are both surds
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Learn: Why a surd is never left in the denominator
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Spot My Mistake: Rationalising and then cancelling a common factor
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Learn: The conjugate of a compound surd expression
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Spot My Mistake: Simplifying the denominator once the conjugate has been used
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Final Revision: Checking a conjugate answer by multiplying back
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Spot My Mistake: Solving a surd equation that leads to a quadratic
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Final Revision: A word problem that leads to an equation in surd form
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Learn: What a binary operation actually is
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Quiz: Evaluating a*b from a given rule
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Spot My Mistake: A binary operation defined on a set of three elements
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Final Revision: Deciding whether a given rule really is a binary operation
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Learn: What closure means for a binary operation
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Quiz: Testing the odd numbers for closure under addition
Act as my SS1 Further Mathematics tutor and quiz me on testing the odd numbers for closure
Spot My Mistake: Reading closure off an operation table
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Final Revision: Why closure is checked before any other property
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