800 prompts matching "Quiz: Checking a surd equation for extraneous roots"
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WAEC Prep: Stating the order of a product before working it out
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Practice: The condition on the orders for a product to exist
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WAEC Prep: Evaluating 2A plus 3B for two given matrices
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Explain Back: Solving a matrix equation containing both a sum and a product
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Worked Example: What a determinant of nought means for a 2 by 2 matrix
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Spot My Mistake: Forming the determinant Dx by replacing the first column
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Worked Example: Forming the determinant Dy by replacing the second column
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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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Explain Back: Solving two simultaneous equations by multiplying by the inverse
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WAEC Prep: When the matrix method is worth the work for three unknowns
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WAEC Prep: Writing three simultaneous equations as a single matrix equation
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Learn: Converting a weight given in kilogram-force into newtons
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WAEC Prep: The resultant of two equal forces at sixty degrees
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WAEC Prep: Resolving before compounding several forces
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WAEC Prep: The resultant of two forces acting at the same point
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Practice: The parallelogram law of forces
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Explain Back: The resultant of two forces acting in the same straight line
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Spot My Mistake: Compounding three forces acting at one point
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WAEC Prep: The angle the resultant makes with the larger of two forces
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