755 prompts matching "Raising a 2 by 2 matrix to the third power"
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Finding an unknown coordinate using the gradient formula
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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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Quiz me rapid-fire on expanding and factorising
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Worked Example: Why the square root of a non-square whole number is irrational
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Quiz: Writing a recurring decimal as a fraction to show it is rational
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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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Common Mistakes: Why a rational number added to an irrational one stays irrational
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Final Revision: Approximating a surd to three decimal places
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Spot My Mistake: Why root 8 and root 2 turn out to be similar
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WAEC Prep: Ordering a list of surds by size
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Learn: Simplifying root 72 into its simplest form
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Quiz: Subtracting one surd from another
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Common Mistakes: Expanding the product of two surd brackets
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Final Revision: Simplifying a fraction whose numerator and denominator are both surds
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Worked Example: Rationalising a denominator that is a single surd
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WAEC Prep: Rationalising a denominator inside a larger expression
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Show All Working: Checking a rationalised answer by decimal approximation
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