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Math Help - Factoring Help - unsure how to categorise it

  1. #1
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    Factoring Help - unsure how to categorise it

    Hey all. Just started a correspondence course with a different school board, and they have a different curriculum. I only learned how to factor typical polynomials at my normal school, but they have different questions that I am unsure how to do or how to categorise them. Here is a question that I am stuck on:

    (x - d)^2 + x - d

    The answer, according to the book, is: (x-d)(x-d+1)

    I am unsure how to go about doing this problem at all. I have been searching around different math sites for about an hour now trying to find this type of problem, but as I am unsure how to categorise it besides "factoring", I got little results.
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  2. #2
    MHF Contributor
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    Quote Originally Posted by Xenophobe View Post
    Hey all. Just started a correspondence course with a different school board, and they have a different curriculum. I only learned how to factor typical polynomials at my normal school, but they have different questions that I am unsure how to do or how to categorise them. Here is a question that I am stuck on:

    (x - d)^2 + x - d

    The answer, according to the book, is: (x-d)(x-d+1)

    I am unsure how to go about doing this problem at all. I have been searching around different math sites for about an hour now trying to find this type of problem, but as I am unsure how to categorise it besides "factoring", I got little results.
    first of all , we look for common factors . I can see that (x-d) is a common factor for this expression .

    (x-d)(x-d)+(x-d) can see ?

    taking this common factor out , we get

    (x-d)(x-d+1)
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