727 prompts matching "Practice: Finding an unknown force from a closed polygon"
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Final Revision: Checking a conjugate answer by multiplying back
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Explain Back: Solving an equation where the surd must be isolated first
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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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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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Explain Back: What it means for an operation to be associative
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WAEC Prep: An operation that is commutative but not associative
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Show All Working: An operation that is associative but not commutative
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Common Mistakes: Subtraction as an example of neither law
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Final Revision: Why brackets matter when an operation is not associative
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Show All Working: Using distributivity to simplify an expression
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Final Revision: Why distributivity links two operations rather than one
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Explain Back: What an inverse element is
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Show All Working: An element with no inverse under a given operation
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Common Mistakes: Checking an inverse by working the operation both ways
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Final Revision: Identity and inverse together, and what they give the set
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Show All Working: Simplifying an expression with letters and indices
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Show All Working: Simplifying an expression that mixes the index types
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Final Revision: Converting an answer back out of index form
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