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28 November, 19:53

Now, suppose one of the roots of the polynomial function is complex. The roots of the function are 2 + i, and 5. Write the equation for this polynomial function.

Which of the following must also be a root of the function?

-3

-5

2 - i

2i

+4
Answers (2)
  1. 28 November, 22:33
    -2
    Why hasnt nobody answered?
  2. 28 November, 23:01
    +2
    The other commentor is right. The correct answer is 2-i

    The second follow-up question is the second option

    f (x) = (x - (2 + i)) (x - (2 - i)) (x - 5)

    The third follow-up question has these three answers.

    9x^2

    25x

    25
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