1,311 prompts matching "Learn: Factorising a quadratic before solving the inequality"
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Worked Example: A singular matrix, and why it has no inverse
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WAEC Prep: Evaluating A squared minus 2A
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WAEC Prep: A matrix expression with brackets to expand
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WAEC Prep: Evaluating 2A plus 3B for two given matrices
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Practice: Evaluating AB minus BA
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Worked Example: What a determinant of nought means for a 2 by 2 matrix
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WAEC Prep: Expanding a 3 by 3 determinant down a column
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WAEC Prep: When Cramer's rule is quicker than elimination
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WAEC Prep: Cramer's rule applied to a pair with fractional coefficients
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WAEC Prep: Setting out Cramer's rule for three simultaneous equations
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Spot My Mistake: Checking a Cramer's rule solution by substituting back
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Practice: Why a 2 by 2 matrix with determinant nought cannot be inverted
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WAEC Prep: Simultaneous equations with fractional coefficients solved by matrix
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WAEC Prep: Writing two simultaneous equations as a single matrix equation
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WAEC Prep: A three-unknown system arising from a word problem
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WAEC Prep: Writing three simultaneous equations as a single matrix equation
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WAEC Prep: Mass, and how it differs from weight
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Spot My Mistake: Compounding three forces acting at one point
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WAEC Prep: Two forces acting in opposite directions
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WAEC Prep: A table of components used to find a resultant
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