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    Mathematics A-Level

    Quadratic in a function of the unknown

    What Quadratic in a function of the unknown means in Mathematics A-Level, as defined for AQA.

    Definition of Quadratic in a function of the unknown

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    Reference: AQA

    An equation solved by substituting, such as u=x², then solving the resulting quadratic and back-substituting.
    AQA · B: Algebra and functions (study guide)

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