Where did I go wrong in this problem?
4.
Simplify the expression.
(–2 – 2i)(–4 + 6i) (1 point)

(a) 8 – 4i
(b) 8 – 12i
(c) 20 – 4i
(d) –4 – 4i

Question

Where did I go wrong in this problem?
4.  
Simplify the expression.
(–2 – 2i)(–4 + 6i)  (1 point)

  (a)  8 – 4i
  (b) 8 – 12i
  (c) 20 – 4i
  (d) –4 – 4i

anonymous · Answer

I got number c. What did you answer?

anonymous · Answer

I attempted FOIL. I turned it into 
8-12i+8i-12i^2
8-20i+12
20-20i

anonymous · Answer

So I haven't answered it yet. could you tell me how you got there please?

asnaseer · Answer

Your second step has a mistake:

8-12i+8i-12i^2
8-20i+12               <---  -12i + 8i = -4i,   NOT -20i