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November 21, 2014

Homework Help: Math

Posted by car on Tuesday, January 18, 2011 at 9:08am.

Is i^2=-1 for how many integers N is (N+i)^4 an integer?


so far i have factored out (N+i)^4 to be ... n^4+2n^2+1 i would suggest checking that, but from there i don't know where to go...doesn't it work for every integer?

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