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    Further Mathematics GCSE

    Irreducible Quadratic

    What Irreducible Quadratic means in Further Mathematics GCSE, as defined for OCR.

    Definition of Irreducible Quadratic

    A quadratic expression that cannot be factorised into linear factors over the real numbers (its discriminant b^2 - 4ac < 0).
    OCR · Pure Core (study guide)

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    Using Irreducible Quadratic in the exam

    Definition questions usually carry one or two marks, and examiners look for the precise wording. Write the definition from memory, check it against the version above, and then use the term in a longer answer on the same topic so it sticks.

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