1,315 prompts matching "Expanding a bracket with a coefficient on x"
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Learn: The effect on a determinant of swapping two rows
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WAEC Prep: The determinant of a 3 by 3 matrix with two equal rows
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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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WAEC Prep: Setting out Cramer's rule for three simultaneous equations
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Explain Back: What a coefficient determinant of nought says about the system
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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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Practice: Turning a minor into a cofactor with the sign rule
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WAEC Prep: The inverse of a 2 by 2 matrix as one over the determinant times the adjoint
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Practice: Why a 2 by 2 matrix with determinant nought cannot be inverted
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WAEC Prep: How long the inverse of a 3 by 3 matrix takes, and how to shorten it
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Quiz: Checking a 3 by 3 inverse by multiplication
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WAEC Prep: Reading the solution off the product of the inverse and the constants
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WAEC Prep: Writing two simultaneous equations as a single matrix equation
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Spot My Mistake: Why the inverse must be applied on the correct side
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WAEC Prep: Writing three simultaneous equations as a single matrix equation
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WAEC Prep: The newton, and how it is defined
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Learn: Converting a weight given in kilogram-force into newtons
You are my personal SS3 Further Mathematics tutor. Teach me converting a weight given in k