661 prompts matching "Practice: Using a binomial expansion to approximate a number"
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Finding an unknown coordinate using the gradient formula
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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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Simplifying an expression with brackets and indices together
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Solving a word problem using simultaneous equations
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Factorising a quadratic with a coefficient in front of x squared
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Cross-multiplying to solve an equation with fractions
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Quiz me rapid-fire on expanding and factorising
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Quiz: Writing a recurring decimal as a fraction to show it is rational
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WAEC Prep: Pi and root 2 as the two best-known irrational numbers
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Show All Working: Classifying a mixed list of numbers as rational or irrational
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Final Revision: Approximating a surd to three decimal places
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Quiz: Reducing two surds to the same root in order to compare them
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Spot My Mistake: Why root 8 and root 2 turn out to be similar
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Show All Working: Deciding whether two given surds are equal without a calculator
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Learn: Simplifying root 72 into its simplest form
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Worked Example: Adding two surds that simplify to the same root
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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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Worked Example: Rationalising a denominator that is a single surd
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