find the galois group of x^4 + 2x^2 + x + 3 over Q.

Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter4: More On Groups
Section4.5: Normal Subgroups
Problem 12E: 12. Find all normal subgroups of the quaternion group.
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find the galois group of x^4 + 2x^2 + x + 3 over Q.   

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