584 prompts matching "Practice: Why a 2 by 2 matrix with determinant nought cannot be inverted"
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Spot My Mistake: The decimal expansion of an irrational number, and why it never repeats
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Spot My Mistake: Why root 8 and root 2 turn out to be similar
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WAEC Prep: Ordering a list of surds by size
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Show All Working: Deciding whether two given surds are equal without a calculator
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Final Revision: Surds that cannot be combined at all
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Spot My Mistake: Dividing one surd by another
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Learn: Why a surd is never left in the denominator
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Final Revision: Checking a conjugate answer by multiplying back
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Final Revision: Why closure is checked before any other property
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Final Revision: Why brackets matter when an operation is not associative
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Final Revision: Why distributivity links two operations rather than one
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Show All Working: An element with no inverse under a given operation
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Show All Working: Simplifying an expression with letters and indices
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Learn: Solving an equation by writing both sides to the same base
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Final Revision: Checking an indicial solution by substitution
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WAEC Prep: Why the logarithm of a negative number does not exist
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Quiz: Evaluating log to base 3 of 7 by change of base
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WAEC Prep: Solving an exponential equation by taking logarithms of both sides
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Spot My Mistake: A sequence defined by a recurrence relation
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Final Revision: A savings problem modelled by an arithmetic progression
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