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March 24, 2017

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Let f(x) = 1/(x+7)+15/(x-8). Find all a for which f(a)=f(a+15).

How do I solve this problem?

  • Formula help - ,

    ok, solve.

    f(a)=f(a+15)
    1/(7+a) + 15/(a-8) = 1/(a+22) + 15/(a+7)

    multiply both sides of the equation by

    (a+7)(a-8)(a+22)
    and solve.

  • Formula help - ,

    This is a multiple choice question and I am not getting any of the choices

    a.) -161/8
    b.) 120/7
    c.) 161/7
    d.) -17

  • Formula help - ,

    Nor do I.

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