1,044 prompts matching "When the matrix method is worth the work for three unknowns"
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Final Revision: Why completing the square always works
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Worked Example: Substituting a, b and c into the quadratic formula correctly
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Common Mistakes: A sign error in the formula, and how to catch it
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Final Revision: A word problem solved with the quadratic formula
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Explain Back: Finding a coefficient when the remainder is given
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Common Mistakes: Using the factor theorem before dividing
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Worked Example: The truth table for the conditional
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Worked Example: The truth table for the biconditional
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Final Revision: Expanding a bracket of the form a plus b over x
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WAEC Prep: The two middle terms when n is odd
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Common Mistakes: The general term when one term in the bracket is negative
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IGCSE Additional Maths Y11: The components of a displacement vector — Worked Example
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IGCSE Additional Maths Y11: The notation used for a definite integral — Worked Example
I am a Year 11 pupil taking Cambridge IGCSE Additional Mathematics. Take me through one co
IGCSE Additional Maths Y11: Using the formula list printed in the paper — Explain It Back
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Explain the factorisation method back to me
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Spot my mistake multiplying a two by two matrix by a two by one matrix
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Spot my mistake checking a logarithmic solution against the domain
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Spot my mistake multiplying two complex numbers in modulus-argument form
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Spot my mistake dividing two complex numbers in modulus-argument form
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Summarise quadratic equations for quick revision
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