Quiz about Operations with Complex Numbers

Question 1

Question 1.

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 2

Question 2.

Accepted Answer

-i

Answer

1

Answer

i

Answer

-1

Question 3

Question 3.

Accepted Answer

B

Answer

A

Answer

C

Answer

D

Question 4

Question 4.

Accepted Answer

B

Answer

A

Answer

C

Answer

D

Question 5

Question 5.

Accepted Answer

1

Answer

i

Answer

4

Answer

-1

Question 6

Question 6.

Accepted Answer

i

Answer

1

Answer

-i

Answer

-1

Question 7

Question 7.

Accepted Answer

-1

Answer

i

Answer

-i

Answer

1

Question 8

Question 8.

Accepted Answer

D

Answer

A

Answer

B

Answer

C

Question 9

Question 9.

Accepted Answer

1

Answer

0

Answer

-i

Answer

i

Question 10

Question 10.

Accepted Answer

B

Answer

A

Answer

C

Answer

D

Question 11

Question 11.

Accepted Answer

D

Answer

A

Answer

B

Answer

C

Question 12

Question 12.

Accepted Answer

A

Answer

B

Answer

C

Answer

D

Question 13

Question 13.

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 14

Question 14.

Accepted Answer

D

Answer

A

Answer

B

Answer

C

Question 15

Question 15.

Accepted Answer

A

Answer

B

Answer

C

Answer

D

Question 16

-6i+3i

Accepted Answer

-3i

Answer

3i

Answer

-2i

Answer

-3i2

Question 17

(5 - 2i) + (-7 + 8i)

Accepted Answer

-2+6i

Answer

12+6i

Answer

-35-16i2

Answer

-35 -16i

Question 18

(10 + 3i) - (2 - 9i)

Accepted Answer

8 + 12i

Answer

20 - 27i

Answer

12 - 7i

Answer

20 - 27i2

Question 19

(i)(3i)

Accepted Answer

-3

Answer

-3i

Answer

3

Answer

2i

Question 20

Multiply
3i(-2 + 4i)

Accepted Answer

-12-6i

Answer

-6+12i

Answer

-2+7i

Answer

12+6i

Question 21

What is the simplified form of (-9 + 5i) + (3 -2i)

Accepted Answer

-6 + 3i

Answer

-12 + 31i

Answer

-11 + 7i

Answer

5 - 3i

Question 22

What is the simplifies form of (11 - 7i) - (-3 + 12i)

Accepted Answer

14 -19i

Answer

8 - 19i

Answer

8 + 5i

Answer

13- 19i

Question 23

What is the simplified form of (-6i)(3i)

Accepted Answer

18

Answer

-18

Answer

-18i

Answer

-18i2

Question 24

What is the simplified form of (-3 + 2i)(1- 4i)

Accepted Answer

5 + 14i

Answer

-2 - 2i

Answer

-11 -10i

Answer

-3 -8i

Question 25

What is the simplified form of (8 -3i)²?

Accepted Answer

55 - 48i

Answer

73

Answer

16 - 6i

Answer

55 + 48i

Question 26

The product of (3 -2i) and (7+6i) is

Accepted Answer

33 + 4i

Answer

21 - 12i

Answer

9 + 4i

Answer

21 + 16i

Question 27

(3+2i)+(-5+8i)

Accepted Answer

-2+10i

Answer

8i

Answer

8+10i

Answer

-2-6i

Question 28

Simplify.
(-2-4i)+(3-6i)

Accepted Answer

1-10i

Answer

-9i

Answer

-5+2i

Answer

1-2i

Question 29

Simplify.
(4+2i) - (-1+5i)

Accepted Answer

5-3i

Answer

3+7i

Answer

5+7i

Answer

2i

Question 30

Simplify.
(5-8i) - (2+9i)

Accepted Answer

3-17i

Answer

3+i

Answer

-14i

Answer

7-17i

Question 31

Simplify.
(10i)(-1i)

Accepted Answer

10

Answer

-10i2

Answer

-10

Answer

-10i

Question 32

Simplify.
2(5+i)

Accepted Answer

10+2i

Answer

10+i

Answer

10i

Answer

12i

Question 33

Simplify.
10i(5+i)

Accepted Answer

-10+50i

Answer

50i+10i2

Answer

40i

Answer

-50

Question 34

Simplify.
(5-i)(5+i)

Accepted Answer

26

Answer

24

Answer

25+i2

Answer

25-i2

Question 35

Simplify.
i²+i⁴

Accepted Answer

0

Answer

1

Answer

-1

Answer

i6

Question 36

What letter usually represents an imaginary number?

Accepted Answer

i

Answer

a

Answer

b

Answer

x

Question 37

What is the "real part" of the complex number (-2+7i)?

Accepted Answer

-2

Answer

2

Answer

7i

Answer

-7i

Question 38

What is the "imaginary part" of the complex number (-2+7i)?

Accepted Answer

7i

Answer

2

Answer

-2

Answer

-7i

Question 39

Simplify
2i - 7i + 10

Accepted Answer

-5i+10

Answer

5i

Answer

9i+10

Answer

5i+10

Question 40

i(2+5i)

Accepted Answer

-5+2i

Answer

5-2i

Answer

7i

Answer

2i+5i

Question 41

(2+3i)(4-2i)

Accepted Answer

14+8i

Answer

48+16i

Answer

12-8i

Answer

2-8i

Question 42

Which of the following is equivalent to

(5-3i)+(-6+2i)?

Accepted Answer

-1-i

Answer

-1-5i

Answer

11-i

Answer

-30-6i

Question 43

Which of the following is equivalent to (3-5i)-(6+2i)

Accepted Answer

-3-7i

Answer

-3-3i

Answer

3-3i

Answer

9-7i

Question 44

3i(4 - i)

Accepted Answer

3 + 12i

Answer

9i

Answer

-3 +12i

Answer

12 - 3i

Question 45

Simplify (11 + 5i)(11 - 5i)

Accepted Answer

146

Answer

121 -110i

Answer

121 + 110i

Answer

121 - 25i²

Question 46

-i(4-9i)

Accepted Answer

13i

Answer

-13i

Answer

9 - 4i

Answer

-9 - 4i

Question 47

(10-6i) - (2+3i)

Accepted Answer

8 - 9i

Answer

12 + 3i

Answer

8 - 3i

Answer

-9i + 8

Question 48

(7 - 5i)(7 + 5i)

Accepted Answer

74

Answer

24

Answer

49 - 25i

Answer

49 + 25i

Question 49

Simplify
3i - (4 + 7i)

Accepted Answer

-4 - 4i

Answer

-4 + 10i

Answer

21 - 12i

Answer

4 - 10i

Question 50

What is the value of the expression below?
(2 + 4i) + i(2 + i)

Accepted Answer

-2 + 6i

Answer

4 + 5i

Answer

2 + 7i

Answer

7i

Question 51

Choose the correct answer for the operation pictured.

Accepted Answer

7 - 13i

Answer

7 - i

Answer

1 - 13i

Answer

1 - i

Question 52

The expression (2 + 3i)² is equal to

Accepted Answer

-5 + 12i

Answer

-5

Answer

13

Answer

13 + 12i

Question 53

(2i)(3i)

Accepted Answer

-6

Answer

5i

Answer

-5

Answer

6i

Question 54

Simplify.
(5-i)(5+i)

Accepted Answer

26

Answer

24

Answer

25+i2

Answer

25-i2

Question 55

(1-2i)(2+3i)

Accepted Answer

8-i

Answer

3+i

Answer

2-6i

Answer

2+6i

Question 56

Choose the correct answer for the operation pictured.

Accepted Answer

7+13i

Answer

7-3i

Answer

-5+3i

Answer

-5+13i

Question 57

(7-8i)-(-3+9i)

Accepted Answer

10-17i

Answer

4-i

Answer

4+i

Answer

-4-17i

Question 58

Evaluate (9 + 3i) (9 - 3i).

Accepted Answer

90

Answer

81 -9i

Answer

81 + 27i -9i²

Answer

81i - 9

Question 59

(1-3i)(2+5i)

Accepted Answer

17-i

Answer

22-i

Answer

16-i

Question 60

(3+8i)(-2-i)

Accepted Answer

2-19i

Answer

23-i

Answer

34+5i

Answer

23-i

Question 61

(1-3i)(2+5i)

Accepted Answer

17-i

Answer

22-i

Answer

16-i

Operations with Complex Numbers

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