1,319 prompts matching "Practice: Deciding whether root 16 is rational or irrational"
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Quiz: Forming a quadratic equation whose roots are given
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Common Mistakes: Proving that a quadratic expression is positive for every real x
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Common Mistakes: Symmetric functions when the three roots of a cubic are involved
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WAEC Prep: Sketching a cubic from its factorised form
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Show All Working: Solving a cubic equation by factorisation
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Worked Example: The sum of the products of the roots of a cubic taken two at a time
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Common Mistakes: Three roots in geometric progression in a cubic
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Practice: Solving an inequality with the unknown in the denominator
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Common Mistakes: The range of values of x for which an expression stays positive
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Common Mistakes: Arrangements restricted at the first or the last place
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Practice: The compound angle formula for cosine of A minus B
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Spot My Mistake: The double angle formula for sine
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Common Mistakes: Expressing a cos x plus b sin x in the form R cos of x minus alpha
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Practice: Solving an equation of the form sin of 2x equals a given value
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Spot My Mistake: Solving an equation by first applying a Pythagorean identity
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Spot My Mistake: The general form ax plus by plus c equals nought
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Common Mistakes: The condition for a line to be a tangent to a circle
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Practice: The ellipse in standard form, and its two axes
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Common Mistakes: The coefficient of variation, for comparing two sets
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Worked Example: The sign convention for clockwise and anticlockwise moments
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