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gilberRelsmin
gilberRelsmin gilberRelsmin
  • 05-09-2016
  • Mathematics
Answered

Which of the following is a polynomial with roots 4, –2i, and 2i ?

Verified Answer :

nobillionaireNobley
nobillionaireNobley nobillionaireNobley
  • 05-09-2016

(x - 4)(x + 2i)(x - 2i) = 0
x(x^2 + 4) - 4(x^2 + 4) = 0
x^3 + 4x - 4x^2 - 16 = 0
x^3 - 4x^2 + 4x - 16 = 0

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