How Do You Solve x^4 + 2x^2 + x + 2 = 0?

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SUMMARY

The polynomial equation x^4 + 2x^2 + x + 2 = 0 has no real zeros, as confirmed by forum participants. It can be factored over the integers, which is essential for finding its roots. The discussion emphasizes the importance of considering the degrees of the polynomials Q and R when attempting to factor P, where P is of degree 4. Participants suggest that understanding the factorization process will clarify the absence of real solutions.

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Caldus
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OK, problem with this equation:

x^4 + 2x^2 + x + 2 = 0

What is/are the solution(s)? I can't figure out how to factor this so that I can find the zeros or whatever...
 
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Hint: It has no Real zeros.
 
it is possible to factor it over the integers.

suppose you have a polynomial P of degree p. you want to factor it as P = Q R where Q and R are polynomials. consider the different degrees Q and R might have if p = 4 as in your case. this consideration will direct the trials and errors when looking for Q and R.
 
How can I prove that I have no zeros?
 
that'll be clear once you factor it.
 

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