1,005 prompts matching "Solving an equation by first applying a Pythagorean identity"
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Worked Example: Factorising a quadratic whose leading coefficient is not one
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Quiz: Factorising a difference of two squares in order to solve it
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WAEC Prep: A quadratic with a repeated root
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Common Mistakes: Writing down the roots once the brackets are found
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Quiz: Completing the square on x squared plus 6x
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Spot My Mistake: Completing the square when the roots are not real
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Final Revision: Why completing the square always works
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Quiz: A negative value of b in the quadratic formula
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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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Spot My Mistake: Finding a missing coefficient from a stated product of roots
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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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WAEC Prep: A pair that gives no real solution at all
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Learn: Forming the quadratic that decides where a line meets a curve
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Quiz: The condition for two points of intersection
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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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Spot My Mistake: A polynomial written in descending powers
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