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United States competition problems

Algebra Difficulty 4.1 AIME Find the answer United States

Problem:
Find the largest prime factor of $-x^{10}-x^{8}-x^{6}-x^{4}-x^{2}-1$ , where $x=2i$ , $i=\sqrt{-1}$ .

Your answer

A number or a short expression. Fractions can be typed as 3/2, and spacing doesn't matter.

Solution

Solution:
13.

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