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    I promise this should be my last question for a while, lol!
    Need help on part ii and iii, not sure on what to do at all, if you could provide me with the solution for them, it will help me a lot with the rest of the questions on this topic and will save me from posting continuously on tsr...many thanks!
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    (Original post by maths10101)
    I promise this should be my last question for a while, lol!
    Need help on part ii and iii, not sure on what to do at all, if you could provide me with the solution for them, it will help me a lot with the rest of the questions on this topic and will save me from posting continuously on tsr...many thanks!
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    For part (ii) - just prove that N(x) is prime in each of the three cases and you are done.
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    (Original post by Zacken)
    For part (ii) - just prove that N(x) is prime in each of the three cases and you are done.
    could you give an example for the 8+root(17 one please??
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    (Original post by maths10101)
    could you give an example for the 8+root(17 one please??
    N(8 + 2\sqrt{17}) = 4
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    (Original post by Zacken)
    N(8 + 2\sqrt{17}) = 4
    So would that means it isn't prime?


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    So for example...
    for 2, its 2^2=4, 4=2.2, therefore it is irreducible because 4 is a factor of 2 numbers
    and then for 8+2*sqrt(17), one gets 4 again, which 4=2.2, therefore since it is a factor of 2 numbers, it is irreducible
    same for the third one.
    is this correct?
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    this one mate
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    well basically, how is 4 prime in the ring R?
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    I need help on these 2 q's....i can't do either one of i or ii, do i post a new thread for help
 
 
 

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