Question

Using the given zero, find all other zeros of f(x).

-2i is a zero of f(x) = x4 - 5x2 - 36

2i, 6i, -6i

2i, 3i, -3i

2i, 6, -6

2i, 3, -3

Answer 1

@Mertsj

Answer 2

That last problem was 0 not no solution

Answer 3

If 2i is a solution then -2i is a solution.

Answer 4

First of all you know that 2i is also a zero since any problem with i as a solution has both the negative and positive. And 3 and -3 are also solutions which you can find by simplifying\[x^4-5x^2-36=0\]