1,332 prompts matching "Common sign errors in algebraic manipulation"
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Factorising an expression with a common algebraic bracket factor
I am in SS 3. Teach me factorising an expression where the common factor is itself a brack
Spot My Mistake: Finding the common ratio from two given terms
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Simplifying algebraic fractions that need factorising a quadratic first
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Solving an equation formed by equating two algebraic fractions
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Evaluating a function at an algebraic input
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Domain of a simple algebraic function
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Structured question: two quadratics sharing a common root
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Worked Example: Taking a common factor out of a matrix
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Practice: The sign pattern of the cofactors in a 3 by 3 determinant
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Practice: Turning a minor into a cofactor with the sign rule
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Worked Example: Classifying a stationary point by the sign of the gradient either side
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Learn: An area lying below the x-axis, and its sign
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Worked Example: Finding the first term and the common difference from two given terms
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Explain the rule of signs for determinants
Explain the checkerboard pattern of positive and negative signs used when expanding a 3x3
Learn: Solving a linear inequality, and reversing the sign on dividing by a negative
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Quiz: Solving a quadratic inequality using a sign table
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Common Mistakes: Showing that intersection distributes over union
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Common Mistakes: A binary operation defined by arithmetic modulo n
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Common Mistakes: Solving an equation in which the unknown sits under a root
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Common Mistakes: Solving an exponential equation using logarithms
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