1,278 prompts matching "Find sum and product of roots of x^2 - 8x + 15 = 0"
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Spot My Mistake: Multiplying a 3 by 3 matrix by a 3 by 1 column
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WAEC Prep: Multiplying a matrix by a fraction
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Quiz: Multiplying a matrix by minus one
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WAEC Prep: Pre-multiplying a column vector by a matrix
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WAEC Prep: Post-multiplying a row vector by a matrix
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Spot My Mistake: A symmetric matrix, equal to its own transpose
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WAEC Prep: A skew-symmetric matrix
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Practice: A diagonal matrix
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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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Practice: Evaluating AB minus BA
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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 the coefficient determinant for two simultaneous equations
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Spot My Mistake: Forming the determinant Dx by replacing the first column
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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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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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