1,044 prompts matching "Finding the identity element from a rule such as a*b = a + b - 3"
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Worked Example: Testing a list of candidates to find a factor
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Worked Example: Factorising a cubic into a linear and a quadratic factor
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Explain Back: A polynomial with a repeated linear factor
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Show All Working: Factorising a polynomial with fractional roots
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Common Mistakes: Factorising fully, and knowing when to stop
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Explain Back: A cubic with a repeated root
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Show All Working: Solving a cubic that must first be rearranged
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Worked Example: Sentences that are not propositions
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Show All Working: Translating an English sentence into logical symbols
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Common Mistakes: Translating a symbolic statement back into English
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Worked Example: Conjunction in a three-variable truth table
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Spot My Mistake: Building a truth table column by column
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WAEC Prep: A truth table with three propositions in it
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WAEC Prep: Why a conditional and its contrapositive are equivalent
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Show All Working: Why a conditional and its converse are not equivalent
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Explain Back: Showing two statements equivalent by truth table
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Spot My Mistake: De Morgan's laws in logic
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Worked Example: What a contradiction is
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Explain Back: Showing that a statement is a contradiction
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Common Mistakes: Deciding between tautology, contradiction and contingency
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