755 prompts matching "IGCSE Additional Maths Y11: Differentiating x cubed from first principles — Work"
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Final Revision: Approximating a surd to three decimal places
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Worked Example: What makes two surds equal
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Explain Back: Why 2 root 3 and 5 root 3 count as similar surds
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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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Show All Working: Deciding whether two given surds are equal without a calculator
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Common Mistakes: Expressing root 50 as a multiple of root 2
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Final Revision: Surds that cannot be combined at all
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Worked Example: Adding two surds that simplify to the same root
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Explain Back: Multiplying root a by root b
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Spot My Mistake: Dividing one surd by another
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WAEC Prep: Squaring a single surd
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Show All Working: Simplifying a surd expression that contains brackets
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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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Explain Back: Simplifying the answer once the denominator is rational
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Spot My Mistake: Rationalising and then cancelling a common factor
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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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