The reason why that's interesting is I have z two minus z one here, so I'm starting to have similar things and then this thing over here... so if I take the conjugate of each of these... if I take the conjugate of each of these... if I take the conjugate of z minus the conjugate of z one, this is going to be equal to T times the conjugate of Z2 minus the conjugate of Z1, and i know that because when i do this, I'm swapping all the signs on the imaginary parts of the complex numbers.