Compute (1 + i)/(2 - i)(3 + i).
(1 + i) (2 - i) (3 + i)
( 2 + 2i - 1i - i^2) (3 + i)
(2 + i - (-1) ) (3 + i)
( 3 + i) (3 + i)
9 + 3i + 3i + i^2
9 + 6i - 1
8 + 6i
