924 prompts matching "Solve 2cos^2(x) - cos(x) - 1 = 0 for 0 to 360 degrees"
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Worked Example: The product of the roots as c over a
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Quiz: Finding the sum and the product without solving the equation
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Spot My Mistake: Finding a missing coefficient from a stated product of roots
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Learn: What makes an expression in the roots symmetric
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Quiz: The value of one over alpha squared plus one over beta 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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Quiz: Solving the quadratic that results from the substitution
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Practice: Finding the matching value of the second unknown
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Spot My Mistake: A pair with equal roots, meaning one solution only
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Learn: What makes an expression a polynomial
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Quiz: The leading term and the constant term
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Practice: Polynomial notation such as P of x
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Spot My Mistake: A polynomial written in descending powers
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Learn: Setting out the division of a cubic by a linear expression
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Quiz: Dividing a quartic by a quadratic
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Practice: A division that leaves no remainder
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Spot My Mistake: A division that leaves a linear 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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