935 prompts matching "Finding n and p from a given mean and variance"
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Show All Working: Choosing between factorising and the formula
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Common Mistakes: A sign error in the formula, and how to catch it
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WAEC Prep: Checking the sum and product against the solved roots
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Final Revision: One root twice the other, and what that gives
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Worked Example: The identity linking alpha squared plus beta squared to the sum and product
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WAEC Prep: Forming an equation whose roots are alpha plus one and beta plus one
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Show All Working: Forming an equation whose roots are three alpha and three beta
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Common Mistakes: A symmetric function needing the sum and product twice over
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Worked Example: Substituting into the quadratic and tidying up
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Common Mistakes: A word problem giving one linear and one quadratic equation
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Common Mistakes: A line and a curve meeting once without the line being a tangent
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Final Revision: A word problem about a line and a parabola
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Explain Back: Evaluating P of 2 for a given polynomial
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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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Common Mistakes: The degree of the quotient and of the remainder
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Worked Example: Testing a list of candidates to find a factor
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Explain Back: Finding a coefficient so that a stated expression is a factor
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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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