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Suppose a(2+i)^4 + b(2+i)^3 + c(2+i)^2 + b(2+i) + a = 0
where a,b,c are integers whose greatest common divisor is 1.
Determine the absolute value of c.

 Apr 30, 2019
 #1
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The answer is 12.

 Nov 28, 2019

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