Add and Subtract Complex Numbers

Question 1

What is the sum of – i and 2 – i?

Revolt · Accepted Answer

(2 + ) – (1 + )i

Question 2

Review the graph.

Revolt · Accepted Answer

quadrant IV

Question 3

Review the graph.

Revolt · Accepted Answer

D

Question 4

Consider and . What is w + z expressed in polar form?

Revolt · Accepted Answer

Cosine (StartFraction pi Over 2 EndFraction) + I sine (StartFraction pi Over 2 EndFraction)

Question 5

Consider z1 = 4 – 4 i and z2 = –16i. What is z1 – z2?

Revolt · Accepted Answer

4 – 4( – 4)i

Question 6

Review the graph.

Revolt · Accepted Answer

C

Question 7

Consider w1 = –3i and w2 = –2. What is the result of subtracting w2 from w1?

Revolt · Accepted Answer

2 – 3i

Question 8

Review the graph.

Revolt · Accepted Answer

C

Question 9

Consider w1 = 4 – 4i and w2 = –2. What is w2 – w1?

Revolt · Accepted Answer

–6 + 4i

Question 10

Review the graph.

Revolt · Accepted Answer

difference: –10 + 0i; location: on the real axis

Add and Subtract Complex Numbers Answers