755 prompts matching "Collecting like surds in a single sum"
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Common Mistakes: A surd equation that has no real solution
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Learn: The formula for the sum of the first n terms of an arithmetic progression
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Worked Example: The alternative sum formula that uses the last term
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Quiz: The sum of the first fifty natural numbers
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Spot My Mistake: The sum of an arithmetic progression with a negative common difference
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Learn: The formula for the sum of the first n terms of a geometric progression
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Worked Example: Which form of the sum formula to use when r is less than one
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Quiz: The sum of the first six terms of a given geometric progression
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IGCSE Additional Maths Y10: When an exact surd answer is required rather than a decimal — Exam Technique
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Zero index rule
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Negative indices in algebraic fractions
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Fractional indices as roots
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Fractional indices with numerator above 1
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Rewriting different bases as the same base
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Solving index equations with matching bases
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Index equations with a fractional right-hand side
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Index equations reducing to a quadratic
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Standard form calculations using indices
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Indices word problem: bacteria growth
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Finding an unknown exponent in an equation
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