755 prompts matching "The focus-directrix definition shared by all the conics"
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Proving a surd statement is true or false
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Surds in trigonometric exact values
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Simplifying nested surds
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Explaining why we rationalise denominators
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Reviewing every surd rule before a test
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Surd equation from a geometry context
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Union and intersection of two number sets
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Complement of a set within a universal set
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Three-set Venn diagram word problem
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Finding a missing intersection from set sizes
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Set-builder notation basics
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Subsets of a given set
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Proper subsets versus subsets
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Set difference A minus B
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Finite and infinite sets
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Logical reasoning with 'and' versus 'or' in sets
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Using sets to test simple logical statements
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Empty set and its notation
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Number of elements in a set from a Venn diagram region count
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Power set of a three-element set
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