Please help!!! Express the following in the form x + iy

(i) (8 + 6i) + (6 + 4i).
(ii) (9 - 3i) + (- 4 + 5i)
(iii) (2 + 7i) - (5 + 3i)
(iv) (5 - i) - (6 - 2i)
(v) 3(4 + 6i) + 9(1 - 2i)
(vi) 3i * (7 - 4i)
(vii) (9 + 2i)(1 + 3i)
(viii) (4 - i)(3 + 2i)
(ix) (7 + 3i) ^ 2
(x) (8 + 6i)(8 - 6i)
(xi) (1 + 2i)(3 - 4i) * (5 + 6i)
( xii) (3 + 2i) ^ 3