1,304 prompts matching "Practice: Why an identity element must work from both sides"
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Spot My Mistake: Forming an equation whose roots are alpha squared and beta squared
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Show All Working: Finding a coefficient given a stated relation between the roots
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Learn: The degree of a polynomial and its leading coefficient
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Worked Example: Evaluating a polynomial by substitution
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Quiz: The factor theorem, and testing whether x minus a is a factor
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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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Spot My Mistake: The relations between roots and coefficients for a quartic
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Show All Working: Three roots in arithmetic progression in a cubic
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Learn: Solving a linear inequality, and reversing the sign on dividing by a negative
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Worked Example: Solving a quadratic inequality by sketching the parabola
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Spot My Mistake: Showing the solution of an inequality on a number line
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Learn: The meaning of n factorial, and how to evaluate it
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Learn: The meaning of n choose r, and how to evaluate it
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Quiz: Choosing a committee of r people from n
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Common Mistakes: Selections in which at least one of a kind must appear
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Quiz: The compound angle formula for sine of A plus B
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Spot My Mistake: The double angle formula for sine
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Learn: Solving sin x equals a given value between 0 and 360 degrees
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