Algebra

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The function
f(x)=x^4−10x^3+40x^2−80x+64
has four complex roots, one of which is 2−2i. What is the sum of all real and imaginary coefficients of these roots?

i here is imaginary unit i.e. i^2 = -1

  • Algebra -

    It's a simple question and i hope that you should try a bit to solve it
    although the answer is 10
    it's a brilliant question ??

  • Algebra -

    I got it its roots are 4 , 2, 2-2i, 2+2i

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