Hi Savior_Self,

Remember, if an imaginary number is a zero to the polynomial function, so is its conjugate.

Therefore, ifiis a zero, then-iis a zero.

(x-i) and (x+i) are factors.

Multiply these two together to get

Now, divide this into your original function to get

Ifiis a factor, and-iis a factor and is a factor then

Your zeros are