# Complex Numbers Quiz

 Complex Numbers

 Multiple Choice Identify the choice that best completes the statement or answers the question. Simplify.

1. a.  c.  b.  d.  2. a.  c.  b.  d.  3.  a.  c.  b.  d.  4.  a.  c.  b.  d.  5.

What is the sum (14 – 5i) + (8 + 12i)?
 a. 22 – 17i c. 2 – 13i b. 6 + 7i d. 6 – 17i

6.

Which represents the product of 3i and 9 – 5i?
 a. 15 – 27i c. –15 – 27i b. 15 + 27i d. –15 + 27i

7.

Which is equivalent to (7 – 6i)(2 + i)?
 a. 20 – 5i c. 8 + 5i b. 8 – 5i d. 20 + 5i

8.

Which product is a real number?
 a. (3 + 4i)2 c. (3 – 4i)(4 + 3i) b. (3 – 4i)2 d. (3 – 4i)(3 + 4i)

9.

Which is equal to i7?
 a. 1 c. i b. –1 d. –i

10.

Which is the reciprocal of i11?
 a. 1 c. i b. –1 d. –i

11.

Which is equal to (4 – 12i) – (10 – 8i) + (4 + 7i)?
 a. –2 + 3i c. –10 – 13i b. –10 + 3i d. –8 – 13i

12.

Which is equal to ?
 a. –41i c. 9 b. –9i d. 41

13.

Which is equivalent to i–30?
 a. 1 c. i b. –1 d. –i

1. D
2. B
3. A
4. C
5. B
6. C
7. A
8. D
9. D
10.C
11.B
12.A
13.B

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