712 prompts matching "why a line tangent to a curve gives equal roots"
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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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Length of a line segment on a graph
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Quiz me rapid-fire on gradients and equations of lines
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Coordinate geometry involving a right-angle condition to find x
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Coordinate geometry applied to a triangle's area check
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Factorising by taking out a common factor
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Solving simultaneous linear equations by elimination
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Cross-multiplying to solve an equation with fractions
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Practice: Deciding whether root 16 is rational or irrational
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Worked Example: What makes two surds equal
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Final Revision: Expressing a rationalised answer in the form a root b over c
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Worked Example: Why multiplying by the conjugate clears the surd
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Final Revision: Why closure is checked before any other property
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Worked Example: Testing a*b against b*a for a given rule
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Final Revision: Why brackets matter when an operation is not associative
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Final Revision: Why distributivity links two operations rather than one
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Practice: Why an identity element must work from both sides
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Worked Example: The critical values of a quadratic inequality
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