Question

Write a polynomial function of least degree with integral coefficients that has the given zeros of 5 and -2i

Answer 1

Hello :
f(x) = (x-5)(x+2i)
      = x² +2ix -5x-10i
f(x) = x² +(2i-5)x -10i 
coefficients : a =1      b = 2i-5     c =-10i