Find complex numbers t = z1 + z2 and s = z1 – z2, both in

Find complex numbers t = z1 + z2 and s = z1 – z2, both in polar form, for each of the following pairs:
(a)z2 – 2 + j3, z2 – 1 – j3,
(b)z1 – 3, z2 – – j3,
(c)z1 0- 3∟30, z2 – 3 ∟-30,
(d)z1 – 3 ∟30, z2 – 3 ∟-150.