Question

Which is equivalent to (3 + 2i)(5 + i)?

Answer 1

For this problem it looks like you have to foil the numbers. So you get:
13+13i

Answer 2

"which" lol

Answer 3

(3 + 2i)(5 + i)
= (3)(5 + i) + 2i (5 + i)
= 15 + 3i + 10i + 2i^2
= 15 + 13i -2
= 13 + 13i

Answer 4

13+13i's the answer. Any other issues?

Answer 5

i do...i think it should be 13(i + 1) :P haha jk