1,045 prompts matching "IGCSE Additional Maths Y10: An exact answer left in surd form — Worked Example"
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Worked Example: Factorising a quadratic whose leading coefficient is not one
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Practice: Factorising a quadratic with a common factor taken out first
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Common Mistakes: Writing down the roots once the brackets are found
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Final Revision: A word problem solved by factorising a quadratic
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Learn: Making the coefficient of x squared equal to one first
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Practice: Working through a quadratic by completing the square, step by step
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Final Revision: Why completing the square always works
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Learn: Deriving the quadratic formula by completing the square
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Practice: Giving the roots correct to two decimal places
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Explain Back: Leaving the roots of a quadratic in surd form
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Final Revision: A word problem solved with the quadratic formula
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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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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
I have just studied the value of alpha minus beta, all squared in my SS2 Further Mathemati
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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Final Revision: Checking both solutions in both equations
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Learn: Forming the quadratic that decides where a line meets a curve
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