1,044 prompts matching "Checking that the roots found satisfy the original equation"
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Worked example: solve x^2+4x+13=0 giving the roots as complex numbers
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Worked example: use matrices to solve the simultaneous equations 2x+y=8 and x-y=1
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WAEC Prep: The minimum value of a quadratic found 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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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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Quiz: Finding the sum and the product without solving the equation
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Learn: What makes an expression in the roots symmetric
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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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Learn: Forming the quadratic that decides where a line meets a curve
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Final Revision: A word problem that uses the remainder theorem
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WAEC Prep: The relation between the roots and the constant term
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IGCSE Additional Maths Y11: The chord length found from the radius and the angle — Explain It Back
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IGCSE Additional Maths Y11: Proving an identity in the Cambridge 'show that' style — Common Mistakes
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IGCSE Additional Maths Y11: Solving an equation of the form tan 3x equals a value — Quiz Me
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IGCSE Additional Maths Y11: Solving an equation with a phase shift inside the bracket — Practice Set
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IGCSE Additional Maths Y11: An equation solved by the substitution t equals tan x — IGCSE Exam Practice
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IGCSE Additional Maths Y11: A vector proof set in the Cambridge 'show that' style — Exam Technique
I am a Year 11 pupil taking Cambridge IGCSE Additional Mathematics. Show me how to handle