Add and Subtract Complex Numbers

Question 1

Complete each of the following statements given z = 1 – 2i and w = –3 + 5i.

Revolt · Accepted Answer

170125; 170126; 170127

Question 2

Question 2

Revolt · Accepted Answer

4

Question 3

Question 3

Revolt · Accepted Answer

7

Question 4

associative✔ commutativedistributive

Revolt · Accepted Answer

✔ commutative

Question 5

The image shows w and z + w. What is z?

Revolt · Accepted Answer

170123; 170124; -3

Question 6

Question 170124

Revolt · Accepted Answer

6

Question 7

Consider the numbers z = (cos 45o + i sin 45o )and w = 2(cos 90o + i sin 90o).

Revolt · Accepted Answer

1; 315

Question 8

Let z = 1 + 3i and w = −3 − 4i.

Revolt · Accepted Answer

✔ 2; The sum z + w is equal to − − i.: 2; The sum z + w is equal to − − i.: 1; The sum w + z is equal to −2 − i.: 1; The result supports that complex number addition is .: commutative

Question 9

Let z = 1 + 3i and w − z = − 3 − 4i. What is w?

Revolt · Accepted Answer

–2 – i

Question 10

Consider the numbers z = 3 (cos(135°) + i sin(135o) and w = cos(180o) + i sin(180°). Which expression is closest to the polar form of z + w?

Revolt · Accepted Answer

5(cos(143o) + i sin(143o))

Add and Subtract Complex Numbers Answers

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