two complex numbers: z and w are given by

z = 5.2 - 3.4j

w = 1.6 + 4.2j

(i) find z + w, zw and z/w.

(ii)

find z - w, express this in polar form and plot it on an Argand Diagram.

Any workings for the first part will be greatly recieved, and any help for second will be a bonus

Thankss...