755 prompts matching "Teach me Cramer's rule from first principles"
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Final Revision: Checking a conjugate answer by multiplying back
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Quiz: Checking a surd equation for extraneous roots
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WAEC Prep: Equating the rational and the irrational parts of an equation
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Final Revision: A word problem that leads to an equation in surd form
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Quiz: Testing the odd numbers for closure under addition
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WAEC Prep: A set closed under one operation but not another
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Final Revision: Why closure is checked before any other property
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WAEC Prep: An operation that is commutative but not associative
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Final Revision: Why brackets matter when an operation is not associative
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Quiz: Left distributivity and right distributivity
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Final Revision: Why distributivity links two operations rather than one
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Final Revision: Identity and inverse together, and what they give the set
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WAEC Prep: Applying two index laws inside one expression
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Quiz: A negative index on a fraction, and turning it upside down
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WAEC Prep: Evaluating 8 to the power two-thirds
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Final Revision: Converting an answer back out of index form
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WAEC Prep: Rejecting a negative answer in an indicial equation
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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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Final Revision: The characteristic and the mantissa of a logarithm
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