755 prompts matching "IGCSE Additional Maths Y11: Checking an answer for reasonableness — Show All Wor"
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Learn: Simplifying root 72 into its simplest form
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Common Mistakes: Rationalising a denominator of the form root a over root b
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Practice: Rationalising a denominator of the form a plus root b over c minus root d
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Learn: Solving an equation with a single square root term
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Practice: Solving an equation with a surd on each side
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WAEC Prep: Equating the rational and the irrational parts of an equation
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Show All Working: Finding a and b when a plus b root 2 equals a given surd
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Worked Example: Reading the symbol used for a binary operation
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Worked Example: Testing the even numbers for closure under addition
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Practice: Testing a set for closure under multiplication
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WAEC Prep: A set closed under one operation but not another
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Worked Example: Testing a*b against b*a for a given rule
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Practice: An operation that is not commutative, with a counter-example
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WAEC Prep: An operation that is commutative but not associative
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Show All Working: An operation that is associative but not commutative
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Show All Working: Using distributivity to simplify an expression
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Learn: What an identity element is
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Practice: Why an identity element must work from both sides
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Show All Working: An element with no inverse under a given operation
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Learn: Reading index notation, the base and the exponent
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