1,045 prompts matching "Why a rational number added to an irrational one stays irrational"
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Learn: The statement of the factor theorem
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Quiz: Which values are worth testing as factors
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Spot My Mistake: The factor theorem applied to a quartic
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Final Revision: A factor theorem question set in the WAEC style
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Learn: Factorising a cubic into three linear factors
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Quiz: Factorising a polynomial by grouping terms
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Spot My Mistake: Factorising the sum of two cubes
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Learn: Solving a cubic once it has been factorised
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Worked Example: How many roots a cubic equation has
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Spot My Mistake: Finding the remaining roots once one is known
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Final Revision: A compound proposition built from three simple ones
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Learn: How many rows a truth table needs
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Quiz: Disjunction and the inclusive or
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Final Revision: The exclusive sense of or, and its truth table
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Final Revision: A conditional statement set in an everyday situation
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Learn: The biconditional, p if and only if q
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Quiz: The biconditional as two conditionals taken together
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Spot My Mistake: De Morgan's laws in logic
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Learn: What a tautology is
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Final Revision: A longer statement tested for tautology
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