1,045 prompts matching "The range of values of x for which an expression stays positive"
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Quiz: The remainder on dividing by x plus 2
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Common Mistakes: The remainder theorem applied to a quartic
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Final Revision: A word problem that uses the remainder theorem
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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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Worked Example: Factorising a cubic into a linear and a quadratic factor
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Common Mistakes: Factorising fully, and knowing when to stop
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Final Revision: Checking a factorisation by expanding it again
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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: Checking a root of a cubic by substitution
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Common Mistakes: Translating a symbolic statement back into English
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Common Mistakes: Comparing two statements by their truth tables
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Quiz: Why a conditional with a false antecedent counts as true
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Final Revision: A conditional statement set in an everyday situation
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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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Common Mistakes: Simplifying a compound statement using the laws
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Final Revision: A biconditional used in a mathematical definition
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WAEC Prep: A tautology used to justify a rule of algebra
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