755 prompts matching "Checking both solutions in both equations"
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Explaining why we rationalise denominators
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Surd equation from a geometry context
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Drawing a two-set Venn diagram from data
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Reading values off a completed Venn diagram
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Logical reasoning with 'and' versus 'or' in sets
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Number of elements in a set from a Venn diagram region count
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Interpreting neither-nor in a Venn diagram problem
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Finding the number of terms in an arithmetic series
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Finding which term of a sequence equals a given value
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Explaining the difference between a sequence and a series
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Finding a sequence's sum between two term numbers
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Explaining why sum to infinity only works for |r| < 1
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Midpoint of a line segment
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Condition for two lines to be parallel
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Condition for two lines to be perpendicular
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Finding the point of intersection of two lines
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Finding where a line crosses the x-axis and y-axis
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Length of a line segment on a graph
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Show all working: multi-part coordinate geometry question
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Coordinate geometry proof: isosceles triangle
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