755 prompts matching "Learn: Swapping and negating the entries when inverting a 2 by 2 matrix"
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Practice: Collecting similar surds in an expression
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WAEC Prep: Ordering a list of surds by size
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Common Mistakes: Expressing root 50 as a multiple of root 2
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Final Revision: Surds that cannot be combined at all
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Practice: Multiplying a whole number by a surd
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WAEC Prep: Squaring a single surd
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Show All Working: Simplifying a surd expression that contains brackets
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WAEC Prep: Rationalising a denominator inside a larger expression
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Show All Working: Checking a rationalised answer by decimal approximation
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Final Revision: Checking a conjugate answer by multiplying back
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Practice: Solving an equation with a surd on each side
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Common Mistakes: A surd equation that has no real solution
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Final Revision: A word problem that leads to an equation in surd form
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Practice: A binary operation set out as a table
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WAEC Prep: Writing a binary operation rule from a description in words
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Show All Working: Evaluating a repeated operation such as a*(b*c)
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Common Mistakes: A binary operation that is ordinary addition in disguise
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Practice: Testing a set for closure under multiplication
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Show All Working: Showing a set is not closed by a single counter-example
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Common Mistakes: Closure on a set of three elements under a stated rule
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