992 prompts matching "Explaining why sum to infinity only works for |r| < 1"
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WAEC Prep: Expressions that are not polynomials, and why not
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Show All Working: Adding and subtracting two polynomials
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Show All Working: Synthetic division as a shorter route
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Show All Working: A remainder of nought, and what it means
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Common Mistakes: The remainder theorem applied to a quartic
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Explain Back: Finding a coefficient so that a stated expression is a factor
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Final Revision: A factor theorem question set in the WAEC style
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Explain Back: A polynomial with a repeated linear factor
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WAEC Prep: Factorising the difference of two cubes
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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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Show All Working: Solving a cubic that must first be rearranged
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WAEC Prep: The symbols used for and, or and not
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Common Mistakes: Translating a symbolic statement back into English
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Show All Working: Reading the final column of a truth table
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WAEC Prep: Why a conditional and its contrapositive are equivalent
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Show All Working: The distributive laws in logic
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WAEC Prep: A tautology used to justify a rule of algebra
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Common Mistakes: Deciding between tautology, contradiction and contingency
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WAEC Prep: Testing an argument for validity by truth table
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