Posted by Barb on Wednesday, September 22, 2010 at 10:27pm.
If -2i is a root,then+2i is a root.
so then it is either A or D. Since you know there are 4 roots in a fourth degree polynomial, D does not offer two roots, so A has to be the answer.
Now that I look at A, I do not see how -4 can be a root.
checking
256+640+672+88*4+80 is not a root. Thatmeans neither A nor D is a root. Which means none of the answers are then right.
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