755 prompts matching "The resultant read off an unclosed polygon"
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Worked Example: Why multiplying by the conjugate clears the surd
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Quiz: Rationalising a denominator of the form one over 2 plus root 3
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Practice: Rationalising a denominator of the form a plus root b over c minus root d
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Spot My Mistake: Simplifying the denominator once the conjugate has been used
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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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Final Revision: Checking a conjugate answer by multiplying back
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Learn: Solving an equation with a single square root term
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Quiz: Checking a surd equation for extraneous roots
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Practice: Solving an equation with a surd on each side
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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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Final Revision: A word problem that leads to an equation in surd form
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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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Worked Example: Testing the even numbers for closure under addition
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Quiz: Testing the odd numbers for closure under addition
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Learn: What it means for an operation to be commutative
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Practice: An operation that is not commutative, with a counter-example
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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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