1,045 prompts matching "the determinant of a three by three matrix"
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Explain Back: Leaving the roots of a quadratic in surd form
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Learn: The sum of the roots as minus b over a
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Worked Example: The product of the roots as c over a
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Common Mistakes: Roots that are reciprocals of one another
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Quiz: The value of one over alpha squared plus one over beta squared
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Practice: The value of alpha to the fourth plus beta to the fourth
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Explain Back: The value of alpha minus beta, all squared
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Spot My Mistake: The value of alpha over beta plus beta over alpha
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Learn: Making one unknown the subject of the linear equation
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Practice: Finding the matching value of the second unknown
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Quiz: The condition for two points of intersection
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Spot My Mistake: Finding the values of c for which a line is a tangent
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WAEC Prep: Finding the values of m for which a line cuts a curve twice
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Worked Example: The degree of a polynomial in one variable
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Common Mistakes: The degree of the quotient and of the remainder
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Learn: The statement of the remainder theorem
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Worked Example: The remainder on dividing by x minus 3
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Quiz: The remainder on dividing by x plus 2
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Practice: The remainder on dividing by 2x minus 1
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Learn: The statement of the factor theorem
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