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Pre Calculus

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

  • Pre Calculus - ,

    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

  • Pre Calculus - ,

    Thank you

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