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kakasveta [241]
3 years ago
10

Which polynomial equations have -i as one of their roots?

Mathematics
1 answer:
pochemuha3 years ago
8 0
I = sqrt(-1)
i^2 = -1
(-i)^2 = (-i)(-i) = i^2 = -1
(-i)^3 = (-i)(-i)(-i) = (-i)(i^2) = i

use these facts to find which equation is correct if x = -i

i bet on 2,3 or 4
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