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22 March, 13:31

How many complex roots does the equation 0=4x4-x3-5x+3 have?

3

4

5

6

+5
Answers (1)
  1. 22 March, 16:23
    0
    4

    Step-by-step explanation:

    Descarte's rule of signs tells you that there will be 0 or 2 positive real roots and 0 negative real roots. A graph shows there are no positive x-intercepts, so 0 real roots.

    All four roots are complex.
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