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    Hi all,
    looking for some help on this question!
    Any help is appreciated
    Thanks
    JamesName:  ImageUploadedByStudent Room1473000102.951189.jpg
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    Have you found ff(x) in terms of a and b?
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    (Original post by james0902)
    Hi all,
    looking for some help on this question!
    Any help is appreciated
    Thanks
    James


    Posted from TSR Mobile
    Find ff(x) in terms of a and b then proceed to compare coefficients, derive some equations in terms of a and b, then solve them.
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    (Original post by RDKGames)
    Find ff(x) in terms of a and b then proceed to compare coefficients, derive some equations in terms of a and b, then solve them.
    I believe it's a^2x + ab + b = 9x - 28
    But I don't know where to go from there

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    (Original post by james0902)
    I believe it's a^2x + ab + b = 9x - 28
    But I don't know where to go from there

    Posted from TSR Mobile
    Equate the coefficients of x and the constant term.

    So if you had cx + d = 9x + 5 then you'd have c=9 and d = 5. In this case, you have (a^2 )x +(ab + b) = (9)x + (-28) . So what can you get?
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    (Original post by james0902)
    I believe it's a^2x + ab + b = 9x - 28
    But I don't know where to go from there

    Posted from TSR Mobile
    Compare the coefficients of x^1 and x^0 because they must be equal to each other on both sides.
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    Can anyone help me with equating the coeffients? I'm rusty and just don't know how to move forward with it


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    (Original post by james0902)
    Can anyone help me with equating the coeffients? I'm rusty and just don't know how to move forward with it


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    There is literally an example above my post. Use it, it isn't a complicated technique and makes sense.
 
 
 
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