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Math Help - factoring problem.

  1. #1
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    factoring problem.

    (x+y)^2+2(x+y)+1

    answer isx+y+1)^2

    can some explain how they came to that? thanks a lot
    Last edited by mr fantastic; May 17th 2011 at 10:31 PM. Reason: Title.
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  2. #2
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    Quote Originally Posted by math69 View Post
    (x+y)^2+2(x+y)+1

    answer isx+y+1)^2

    can some explain how they came to that? thanks a lot
    put x+y=a and now try.
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  3. #3
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    i guess your going to have to spell it out for me, tried it and still confused
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  4. #4
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    Quote Originally Posted by math69 View Post
    i guess your going to have to spell it out for me, tried it and still confused
    What did you try? Spell it out. Where are you stuck?
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  5. #5
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    factor

    i dont even get where to start, everything i learned in algebra so far would tell me to distribute that 2 into the (x+y) or at least add that 2 and 1 together through communative property, but on my little algebra helper program it goes a different route that iam not familiar with and the answer doesnt make sense to me, was hoping for a human to explain it step by step, thanks for any help
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  6. #6
    Senior Member abhishekkgp's Avatar
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    Quote Originally Posted by math69 View Post
    i dont even get where to start, everything i learned in algebra so far would tell me to distribute that 2 into the (x+y) or at least add that 2 and 1 together through communative property, but on my little algebra helper program it goes a different route that iam not familiar with and the answer doesnt make sense to me, was hoping for a human to explain it step by step, thanks for any help
    you know that a^2+2a+1=(a+1)^2
    now put x+y=a in the original problem.
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  7. #7
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    ahh i see its a special product, i see, kind of decieving when your taught to distribute first all the time, thanks so much
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  8. #8
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    Quote Originally Posted by math69 View Post
    i dont even get where to start, everything i learned in algebra so far would tell me to distribute that 2 into the (x+y) or at least add that 2 and 1 together through communative property, but on my little algebra helper program it goes a different route that iam not familiar with and the answer doesnt make sense to me, was hoping for a human to explain it step by step, thanks for any help
    "put x+y=a" was the first thing post #2 said to do. Did you bother to even try doing this!?

    Then you were told "and now try". Did you?
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