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    FLchickie's Avatar
    FLchickie Posts: 8, Reputation: 2
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    #1

    Oct 15, 2007, 03:29 PM
    Pythagorean triples?
    Never used this site so bear with me :D


    Ok a question from my schoolbook:


    Which of the following sets are Pythagorean triples?

    Im pretty sure I got the first three right but not sure how to do this one at all:

    3^2, 4^2, and 5^2.



    Does the fact that there is already a 2 there mean I should square it twice??

    HELP!!

    Thanks!
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #2

    Oct 15, 2007, 03:36 PM
    Quote Originally Posted by FLchickie
    Never used this site so bear with me :D


    Ok a question from my schoolbook:


    Which of the following sets are Pythagorean triples?

    Im pretty sure I got the first three right but not sure how to do this one at all:

    3^2, 4^2, and 5^2.



    Does the fact that there is already a 2 there mean I should square it twice???

    HELP!!!

    Thanks!
    A Pythagorean triple consists of 3 integers a, b, and c, where a^2 + b^2 = c^2. Hence 3, 4, and 5 are a Pythagorean triple, since 3^2 + 4^2 = 5^2. However, 3^2, 4^2 and 5^2 is NOT a Pythagorean triple, since 9^2 + 16^2 does not equal 25^2.
    FLchickie's Avatar
    FLchickie Posts: 8, Reputation: 2
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    #3

    Oct 15, 2007, 05:35 PM
    Sweet man, thanks. I was really messed up over this!
    FLchickie's Avatar
    FLchickie Posts: 8, Reputation: 2
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    #4

    Oct 17, 2007, 12:35 PM
    I thought I had the other two answers yest but now I rechecked and Im not sure.

    The square root of 3, the square root of 4, and the square root of 5 are NOT Pyth. Triples correct? It equals out to 3+4=5 which is incorrect.

    And for 1/3,1/4, and 1/5 I got 1/9+1/16=1/25 so that isn't one either?
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #5

    Oct 17, 2007, 12:42 PM
    Quote Originally Posted by FLchickie
    I thought I had the other two answers yest but now I rechecked and Im not sure.

    The square root of 3, the square root of 4, and the square root of 5 are NOT Pyth. triples correct? It equals out to 3+4=5 which is incorrect.

    And for 1/3,1/4, and 1/5 I got 1/9+1/16=1/25 so that isnt one either?
    That's right - these are NOT Pythagorean triples.

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