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    Hi I'm doing a maths past paper but I'm really struggling with a question, I'd really appreciate anyone's help. Thanks

    17. f=3/(x+1) + 1/(x-2)

    a) State one value of x which cannot be included in any domain of f.
    b) Find the value of f(0) - (think I've done that one though)
    c) Find the value of x for which f(x) =0. Show clear algebraic working.

    If you answer them please could you put the working out so I know how to do it in the future? Thank you!
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    (Original post by Lennie14!)
    Hi I'm doing a maths past paper but I'm really struggling with a question, I'd really appreciate anyone's help. Thanks

    17. f=3/(x+1) + 1/(x-2)

    a) State one value of x which cannot be included in any domain of f.
    b) Find the value of f(0) - (think I've done that one though)
    c) Find the value of x for which f(x) =0. Show clear algebraic working.

    If you answer them please could you put the working out so I know how to do it in the future? Thank you!
    For A the only thing i can think of is this,
    remember that any number/0 can't work? Well that can apply here.
    Spoiler:
    Show
    1 to make the first fraction have a total of 0 on the bottom OR 2 to make the second fraction 0 on the bottom

    For C put f= to 0 then cross multiply and solve like a normal algebraic problem
    Spoiler:
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    3/(x+1) + 1/(x-2)=0
    3(x-2) + x+1=0
    3x-6+x+1=0
    4x-5=0
    4x=5
    x=5/4 or 1.25 or 1¼
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    thanks
 
 
 
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