1,320 prompts matching "The minimum value of a quadratic found by completing the square"
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Explain Back: Rationalising a denominator of the form a plus root b using the conjugate
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WAEC Prep: Comparing the sizes of two surds without a calculator
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Learn: The multiplication and division laws of indices used together
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Quiz: Solving an index equation by writing both sides to the same base
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Explain Back: The laws of logarithms for a product and for a quotient
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WAEC Prep: The change of base formula for logarithms
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Final Revision: Sketching the graph of a logarithmic function
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Learn: The sum and the product of the roots read from the coefficients
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Worked Example: The discriminant, and what each of its three cases means
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Practice: The condition for a quadratic equation to have equal roots
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Common Mistakes: Symmetric functions when the three roots of a cubic are involved
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Learn: The degree of a polynomial and its leading coefficient
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Final Revision: The zeros of a polynomial and where its graph cuts the x-axis
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Learn: The sum of the roots of a cubic read from its coefficients
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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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Quiz: The product of the roots of a cubic
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Practice: Finding the third root of a cubic when two are known
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Learn: Solving a linear inequality, and reversing the sign on dividing by a negative
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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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