1,483 prompts matching "Forgetting to swap the leading diagonal when inverting"
Extra quiz: Finding the rate or the time from a given interest
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More practice: Finding the principal, rate or time
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Real-life question: Expanding a bracket and then simplifying
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Another worked example: Simplifying an expression containing a fraction
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Teach me again: Adding algebraic fractions whose denominators share a factor
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Check my understanding: Factorising an expression whose common factor carries a minus sign
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Another worked example: Describing a set by listing
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Teach me again: Why the empty set is a subset of every set
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More practice: Finding the union of two sets
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Real-life question: The complement of a union and of an intersection
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Another worked example: Using a Venn diagram with three sets
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More WAEC practice: The complement of the union of two sets
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Teach me again: Checking the solution of a linear equation by substituting it back
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Find my error: Substituting given values into a formula
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Another worked example: A pair of simultaneous equations from a word problem
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More WAEC practice: Eliminating a letter by adding the two equations
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Find my error: Writing the equation that represents a direct
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Real-life question: Writing the equation that represents
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More WAEC practice: A quadratic solved by the method that suits its coefficients
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Extra quiz: Solving a quadratic equation using the graphical
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