755 prompts matching "Give me common mistakes students make in complex numbers"
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Alternating sequences and their pattern
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Explaining why sum to infinity only works for |r| < 1
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Gradient of a line joining two points
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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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Equation of the perpendicular bisector of a segment
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Area of a triangle from three coordinates
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Deciding if three points are collinear
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Finding where a line crosses the x-axis and y-axis
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Sketching a straight line from its equation
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Vertical and horizontal line equations
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Finding the equation of a line parallel to the x-axis or y-axis through a point
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Finding the equation of a circle from its centre and radius
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Distance from a point to the centre of a circle
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Finding an unknown coordinate using the gradient formula
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Perpendicular from a point to a line
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Distinguishing gradient sign: positive, negative, zero, undefined
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Locus problem: points equidistant from two fixed points
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Expanding a product of two brackets
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