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Posted by Lia on Saturday, October 18, 2008 at 11:51pm.

please explain the process of finding the complex zeros of f(x)=x^4+5x^2+4.

so we are solving x^4+5x^2+4 it factors (x^2+1)(x^2+4) = 0 x^2 = -1 or x^2 = -4 x = +/- i or x = +/- 2i where i = √-1

Thank you

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