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    Where do I start?
    χ²-8χ-29 ≡ (χ + a)² + b

    where a and b are constants
    find the value of a and b
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    (Original post by eliwats)
    Where do I start?
    χ²-8χ-29 ≡ (χ + a)² + b

    where a and b are constants
    find the value of a and b
    You can start by completing the square. The thing you did in GCSE.
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    Complete the square.

    x^2 +2ax +b =(x+a)^2 - a^2 +b
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    there are a few ways in which you can do this question, however some methods are more detailed than others so the amount of marks the question is worth changes which methods you should use. for example my favourite method which is easy to understand is a drawing, very little writing and will get one mark, purely for the answer.
    try checking back on some notes on completing the square or a youtube tutorial on it. i recommend examsolutions, theyre great.
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    complete the squircle
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    Complete the square .....
    Spoiler:
    Show
    (x +4)^2 - 45
 
 
 
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