755 prompts matching "Use the quadratic formula on x^2 + x - 1 = 0"
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Finding the common difference from given terms
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Finding the common ratio from given terms
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Deciding whether a geometric series converges
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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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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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Finding the centre and radius from a circle's equation
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Simultaneous equations of a line and the coordinate axes
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Finding an unknown coordinate using the gradient formula
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Finding the equation of a median of a triangle
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Solving a linear inequality and showing the solution
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Simplifying an expression with brackets and indices together
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Explaining the difference between an expression and an equation
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Worked Example: Why the square root of a non-square whole number is irrational
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Practice: Deciding whether root 16 is rational or irrational
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Explain Back: Where the surds sit on the number line
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Spot My Mistake: The decimal expansion of an irrational number, and why it never repeats
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Quiz: Subtracting one surd from another
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Spot My Mistake: Dividing one surd by another
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