698 prompts matching "AP with 3rd term 11 and 8th term 31: find a and d"
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Multiplying two surds together
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Rationalising using the conjugate
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Dividing surds using the quotient rule
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Rationalising the denominator when it's a surd minus a surd
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Surds in trigonometric exact values
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Explaining why we rationalise denominators
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Surd equation from a geometry context
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Simplifying a surd expression before squaring
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Finding a missing intersection from set sizes
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Set-builder notation basics
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Proper subsets versus subsets
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Set difference A minus B
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Working backwards from Venn diagram totals
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Number of elements in a set from a Venn diagram region count
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Set operations exam question, multi-part
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Interpreting neither-nor in a Venn diagram problem
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Power set of a three-element set
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Set problem leading to a linear equation
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Deciding whether a geometric series converges
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Deriving the geometric series sum formula
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