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FP1 Algebra Problem Watch

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    Hi, I have this question from an FP1 Chapter Assessment, and I've managed to do all of the other questions but for some reason, I can't seem to figure out this one even though it's easier compared to the others.
    The Question: Find the values of the unknown constants in this identity:
    3x-2=P(x+1)^2+Q(x+1)(x-3)+R(x-3)^2
    Any help would be much appreciated! Thank you
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    Expand each bracket and then equate coefficients. This should form 3 equations that you can then solve simultaneously. (I haven't tried the question so I don't know how it would come out exactly)
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    (Original post by XmayaX)
    Hi, I have this question from an FP1 Chapter Assessment, and I've managed to do all of the other questions but for some reason, I can't seem to figure out this one even though it's easier compared to the others.
    The Question: Find the values of the unknown constants in this identity:
    3x-2=P(x+1)^2+Q(x+1)(x-3)+R(x-3)^2
    Any help would be much appreciated! Thank you
    substitute values to make x+1=0 and x-3=0 to find P and R then equate coefficients to find Q
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    (Original post by kieran12321LFC)
    substitute values to make x+1=0 and x-3=0 to find P and R then equate coefficients to find Q
    Hiya, thanks so much for the help but I realised that I needed to do that, I'd just been trying to equate the coefficients which was pretty complicated!
 
 
 
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