1,043 prompts matching "IGCSE Additional Maths Y10: Finding k so that a quadratic has equal roots — Expl"
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Learn: What makes a permutation cyclic
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Worked Example: The number of ways n people sit round a round table
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Show All Working: A circular arrangement with one fixed seat such as the head
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Learn: Selecting a team of five from a squad
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Worked Example: Selections in which the order does not matter
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Show All Working: Selecting a committee with the chairman named separately
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Learn: Probability as favourable outcomes over total outcomes
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Worked Example: Counting the total outcomes with combinations
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Show All Working: The complement rule used in a counting problem
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Learn: Building Pascal's triangle row by row
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Worked Example: Reading the coefficients of an expansion off Pascal's triangle
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Show All Working: The binomial coefficients written as n choose r
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Learn: The formula for the general term of an expansion
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Show All Working: The general term when the bracket contains a fraction
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Spot my mistake in factorising x^2+5x+6
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Difference of two squares practice
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Teach me the completing the square when the coefficient of x squared is one
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Spot my mistake completing the square
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Quiz me on the using the discriminant to describe the roots
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Teach me writing the sum and product of the roots from the coefficients
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