755 prompts matching "Why the sum to infinity fails when the ratio reaches one"
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Common Mistakes: Expanding the product of two surd brackets
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Final Revision: Simplifying a fraction whose numerator and denominator are both surds
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Show All Working: Checking a rationalised answer by decimal approximation
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Learn: The conjugate of a compound surd expression
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Explain Back: Solving an equation where the surd must be isolated first
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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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Final Revision: A word problem that leads to an equation in surd form
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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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Worked Example: Testing the even numbers for closure under addition
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Explain Back: Testing the integers for closure under division
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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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Common Mistakes: Subtraction as an example of neither law
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Worked Example: Testing whether star distributes over plus
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Show All Working: Using distributivity to simplify an expression
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Worked Example: Finding the identity element from a rule such as a*b = a + b - 3
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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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Worked Example: The law for multiplying powers of the same base
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