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    On Solomon paper D for C4 on question 3a. On the specification for Algebra and Functions 'Quadratics factors in the denominator such as x² + a where a>0' is not required. Does this go for (x² - 3x) or not?
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    (Original post by Hus_87)
    On Solomon paper D for C4 on question 3a. On the specification for Algebra and Functions 'Quadratics factors in the denominator such as x² + a where a>0' is not required. Does this go for (x² - 3x) or not?
    x² - 3x = x(x-3)

    Partial fractions.
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    (Original post by Hus_87)
    On Solomon paper D for C4 on question 3a. On the specification for Algebra and Functions 'Quadratics factors in the denominator such as x² + a where a>0' is not required. Does this go for (x² - 3x) or not?
    No, a>0 means when the constant a which is free from the variable x:
    e.g x² + 4, a = 4, is not required

    In your example x² - 3x, there is no a, (a=0) hence you should factorise this to x(x-3)

    x² + 4 can not be factorised hence this is true when a is a positive integer and the function is a quadratic.
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    Thanks for clearing it up guys
 
 
 
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