1,319 prompts matching "Practice: Deciding whether root 16 is rational or irrational"
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Final Revision: The zeros of a polynomial and where its graph cuts the x-axis
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Quiz: The product of the roots of a cubic
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WAEC Prep: Finding a coefficient of a cubic given one of its roots
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Spot My Mistake: Showing the solution of an inequality on a number line
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Show All Working: Solving a pair of simultaneous linear inequalities
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Final Revision: The region of the plane satisfying a set of linear inequalities
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Learn: The meaning of n factorial, and how to evaluate it
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Practice: Arrangements when some of the objects are identical
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Spot My Mistake: Arrangements in which two particular objects must be kept apart
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Show All Working: Arrangements of the letters of a given word
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Practice: Choosing a committee that must contain one particular person
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Spot My Mistake: The identity that n choose r equals n choose n minus r
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Show All Working: Counting the handshakes, or the lines joining n points
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Learn: The Pythagorean identity, sin squared plus cos squared equals one
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Explain Back: The compound angle formula for tan of A plus B
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WAEC Prep: The three forms of the double angle formula for cosine
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Show All Working: The half angle formulae and the t-substitution
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WAEC Prep: Solving an equation by first applying a double angle formula
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Show All Working: Solving a cos x plus b sin x equals c by the R method
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Practice: The effect of a in y equals a sin x
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