755 prompts matching "Learn: The order of the steps in inverting a 3 by 3 matrix"
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Finding where a line crosses the x-axis and y-axis
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Coordinate geometry proof: right-angled triangle
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Coordinate geometry proof: isosceles triangle
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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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Equation of a line with a given y-intercept and passing through a point
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Expanding a product of two brackets
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Expanding a product of three brackets
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Factorising by taking out a common factor
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Solving a linear inequality and showing the solution
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Changing the subject with a square or square root
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Factorising a quadratic with a coefficient in front of x squared
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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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Spot My Mistake: The decimal expansion of an irrational number, and why it never repeats
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Common Mistakes: Expressing root 50 as a multiple of root 2
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Explain Back: Multiplying root a by root b
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Practice: Rationalising a denominator with a whole number multiplying the surd
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Final Revision: Expressing a rationalised answer in the form a root b over c
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