1,045 prompts matching "Sum of an arithmetic series given the first and last term"
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Quiz: Completing the square on x squared plus 6x
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Spot My Mistake: Completing the square when the roots are not real
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WAEC Prep: Forming an equation whose roots are alpha plus one and beta plus one
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Quiz: Solving the quadratic that results from the substitution
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Spot My Mistake: A pair with equal roots, meaning one solution only
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WAEC Prep: Expressions that are not polynomials, and why not
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Worked Example: The division algorithm for polynomials
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Explain Back: A division that leaves a constant remainder
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Worked Example: The remainder on dividing by x minus 3
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Quiz: The remainder on dividing by x plus 2
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WAEC Prep: The remainder theorem checked against long division
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Spot My Mistake: The factor theorem applied to a quartic
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Worked Example: Factorising a cubic into a linear and a quadratic factor
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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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Worked Example: The truth table for the conditional
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Quiz: Why a conditional with a false antecedent counts as true
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WAEC Prep: Why a conditional and its contrapositive are equivalent
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Worked Example: The truth table for the biconditional
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Quiz: The biconditional as two conditionals taken together
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