755 prompts matching "The focus-directrix definition shared by all the conics"
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Index equations reducing to a quadratic
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Simplifying bracketed algebraic index expressions
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Finding an unknown exponent in an equation
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Laws of indices with three different bases in one line
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Evaluating a negative fractional index
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Simplifying before substituting a value
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Index laws with an unknown letter base
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Simplifying indices before adding like terms
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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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Adding and subtracting like surds
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Adding surds that need simplifying first
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Expanding a binomial surd bracket
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Rationalising a denominator with a single surd
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Rationalising a more complex conjugate denominator
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Solving a surd equation with terms on both sides
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Surd answers in area and perimeter questions
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Distinguishing rational and irrational numbers
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Surds combined with algebraic terms
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