993 prompts matching "Rationalising and then cancelling a common factor"
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Learn: Deriving the quadratic formula by completing the square
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Quiz: A negative value of b in the quadratic formula
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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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Explain Back: Finding a missing coefficient from a stated sum 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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Explain Back: The value of alpha minus beta, all squared
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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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Explain Back: Writing the answers as ordered pairs
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Learn: Forming the quadratic that decides where a line meets a curve
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Worked Example: The discriminant used as the test for intersection
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Quiz: The condition for two points of intersection
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Explain Back: The condition for the line never to meet the curve
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Learn: What makes an expression a polynomial
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Worked Example: The degree of a polynomial in one variable
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Explain Back: Evaluating P of 2 for a given polynomial
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Learn: Setting out the division of a cubic by a linear expression
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