Raymond B. answered 03/07/21
Math, microeconomics or criminal justice
If you know one imaginary zero, then the conjugate is necessarily another imaginary zero
IF i is a zero so is -i.
IF 1-i is a zero so is 1+i
if i is a zero then a factor of the polynomial is (x^2+1) = (x-i)(x+i) take each zero change the sign and stick an x in front of it to get the factor of the polynomial