755 prompts matching "WAEC exam question: two unknowns from remainder and factor conditions"
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Spot My Mistake: The decimal expansion of an irrational number, and why it never repeats
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Explain Back: Why 2 root 3 and 5 root 3 count as similar surds
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Spot My Mistake: Why root 8 and root 2 turn out to be similar
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Final Revision: Simplifying a fraction whose numerator and denominator are both surds
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Worked Example: Rationalising a denominator that is a single surd
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Spot My Mistake: Rationalising and then cancelling a common factor
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Worked Example: Why multiplying by the conjugate clears the surd
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Explain Back: The difference of two squares applied to surd conjugates
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Worked Example: Squaring both sides safely when solving a surd equation
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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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Worked Example: Testing a*b against b*a for a given rule
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Worked Example: Testing whether star distributes over plus
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Explain Back: Showing distributivity fails by a counter-example
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Final Revision: Identity and inverse together, and what they give the set
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Worked Example: The law for multiplying powers of the same base
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Worked Example: Rewriting a negative index as a fraction
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Worked Example: Solving an indicial equation where one side must be factorised first
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Explain Back: An indicial equation with the unknown in the exponent on both sides
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Worked Example: Writing an index statement as a logarithm
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