We can play around subtracting these two complex numbers z1 and z2.[br]But there are some important observations to make[br][br]What if z1 and z2 are [br]a) purely real?[br]b)purely imaginary?[br]c) a conjugate pair?[br]d) Im(z1)= Im(z2)[br]e) Re(z1) = Re(z2)[br][br]