Question

-2i is a zero of f(x) x^4 - 32x^2 - 144
What are the other zeros?

Answer 1

Help Please.

Answer 2

Can you help me?

Answer 3

??

Answer 4

If -2i is a zero, then its conjugate 2i is also a zero.
Multiply the factors \((x - 2i)(x+2i)\)
Then divide your polynomial by the result using long division

Answer 5

x^2 -4i right?

Answer 6

and I divide that into x^4 - 32x^2 - 144?

Answer 7

no. Should be \(x^2-4i^2\), which is \(x^2+4\).
And then divide

Answer 8

ok