831 prompts matching "Rationalising a denominator with three surd terms"
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WAEC Prep: Reading the order of a matrix as rows by columns
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Learn: Deciding whether a stated matrix calculation is possible at all
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WAEC Prep: Evaluating A squared minus 2A
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WAEC Prep: Evaluating 2A plus 3B for two given matrices
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Quiz: Finding an unknown entry from a stated matrix equation
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WAEC Prep: When Cramer's rule is quicker than elimination
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Learn: Solving two simultaneous equations by Cramer's rule
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WAEC Prep: What Cramer's rule gives when the system is inconsistent
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Spot My Mistake: Checking a Cramer's rule solution by substituting back
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Quiz: Arranging the equations in standard form before applying Cramer's rule
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WAEC Prep: The cofactor of a corner entry
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WAEC Prep: Why the cofactor signs alternate
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WAEC Prep: The minor of an entry of a 3 by 3 matrix
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WAEC Prep: The adjoint of the identity matrix
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WAEC Prep: The order in which the cofactors are transposed
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WAEC Prep: The adjoint as the transpose of the matrix of cofactors
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Spot My Mistake: Finding the adjoint of a 3 by 3 matrix
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WAEC Prep: The inverse of an inverse
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Learn: Swapping and negating the entries when inverting a 2 by 2 matrix
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Quiz: Checking an inverse by multiplying to get the identity
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