Simplify the expressions:

(5 – 5i) – (–6 – 3i)
a. –1 – 8i
b. 11 – 2i
c. –11 + 2i
d. 9i

(–2 – 2i)(–4 + 6i)
a. 8 – 4i
b. 8 – 12i
c. 20 – 4i
d. –4 – 4i

Question

Simplify the expressions:

(5 – 5i) – (–6 – 3i) 
a. –1 – 8i
b. 11 – 2i
c. –11 + 2i
d. 9i

(–2 – 2i)(–4 + 6i) 
a. 8 – 4i
b. 8 – 12i
c. 20 – 4i
d. –4 – 4i

yoloshroom · Answer

So it's basically 5-5i +6+3i
so 11-2i for the first one

and use foil for the 2nd one

yoloshroom · Answer

and the second is 20-4i

anonymous · Answer

Okay, thank you so much. Have a wonderful night. c:

dn_20 · Answer

So the first one: (5 – 5i) – (–6 – 3i),
= 5 -5i +6 +3i
= 11 -2i
B is correct
The second one (–2 – 2i)(–4 + 6i) 
FOIL = 8 -12i +8i -12i^2
=12 -4i +6
= 20 - 4i
C is correct

anonymous · Answer

Ahh, I see thanks for explaining it. @DN_20