661 prompts matching "Practice: Using a binomial expansion to approximate a number"
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Solving an equation with a fractional exponent on x
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Combining several index laws in one simplification
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Simplifying indices before adding like terms
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Explaining why a^1/n means the nth root of a
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Index expression with three unknown letters
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Combining index and surd notation
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Multi-part index exam question with a real context
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Reviewing all the laws of indices before a test
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Adding and subtracting like surds
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Adding surds that need simplifying first
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Expanding brackets containing surds
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Solving a surd equation with terms on both sides
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Surds arising from Pythagoras' theorem
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Surd answers in area and perimeter questions
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Comparing the size of two surds
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Surds in the quadratic formula
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Rationalising and then simplifying fully
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Surds combined with algebraic terms
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Solving a surd equation that gives an extraneous root
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Surds in trigonometric exact values
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