755 prompts matching "Discriminant and the nature of roots"
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Gradient of a line joining two points
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Equation of a line through two given points
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Area of a triangle from three coordinates
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Length of a line segment on a graph
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Vertical and horizontal line equations
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Gradient as a rate of change interpretation
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Finding an unknown coordinate using the gradient formula
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Expanding and simplifying with negative brackets
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Changing the subject when the variable appears twice
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Factorising a quadratic with a coefficient in front of x squared
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Show All Working: Classifying a mixed list of numbers as rational or irrational
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WAEC Prep: Ordering a list of surds by size
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Show All Working: Deciding whether two given surds are equal without a calculator
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Final Revision: Simplifying a fraction whose numerator and denominator are both surds
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Learn: Why a surd is never left in the denominator
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Show All Working: A conjugate where the surd term comes first
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Quiz: Checking a surd equation for extraneous roots
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Spot My Mistake: A binary operation defined on a set of three elements
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Final Revision: Deciding whether a given rule really is a binary operation
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Spot My Mistake: Reading closure off an operation table
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