Answer:
Step-by-step explanation:
hello :
(3+i)(2+i) = 6+3i+2i+i² but : i² = -1
(3+i)(2+i) = 5+5i
5 +5i
(3+i)(2+i)
FOIL
first 3*2 =6
outer: 3i
inner : 21
last i*i = i^2 = -1
Add them together
6+3i+2i-1
