720 prompts matching "Find sum and product of roots of x^2 - 8x + 15 = 0"
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Common Mistakes: Writing a root as a fractional index before simplifying
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Common Mistakes: Rejecting a root that makes a logarithm undefined
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Common Mistakes: Proving the sum formula by pairing the terms
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Final Revision: Proving the sum formula for a geometric progression
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IGCSE Additional Maths Y10: Rejecting a root that the substitution forbids — Show All Working
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IGCSE Additional Maths Y10: A cubic with only one real root — Common Mistakes
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Multiplication law of indices
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Division law of indices
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Power of a power rule
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Fractional indices as roots
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Standard form calculations using indices
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Comparing the size of two large index numbers
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Simplifying a fraction of two bracketed index terms
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Finding an unknown exponent in an equation
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Adding and subtracting like surds
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Expanding brackets containing surds
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Rationalising a denominator with a surd and integer
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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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Distinguishing rational and irrational numbers
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