Quiz about Representing Complex Numbers

Question 1

(12 - 5i) + (-3 + 4i)

Accepted Answer

A. 9 - i

Answer

B. 15 - 9i

Answer

C. -16 + 63i

Answer

D. 9 - 9i

Question 2

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

Accepted Answer

90

Answer

81 -9i

Answer

81 + 27i -9i²

Answer

81i - 9

Question 3

i7

Accepted Answer

-i

Answer

i

Answer

1

Answer

-1

Question 4

Simplify:
(10+ 15i) - (48 - 30i)

Accepted Answer

-38 + 45i

Answer

58 - 45i

Answer

58 - 15i

Answer

-38 - 15i

Question 5

Find the sum.
(5-2i) + (-7+8i)

Accepted Answer

-2+6i

Answer

12+6i

Answer

-35-16i2

Answer

-35 -16i

Question 6

what is the conjugate?

Accepted Answer

b

Answer

a

Answer

c

Answer

d

Question 7

What is the conjugate of -2+5i?

Accepted Answer

-2-5i

Answer

-5+2i

Answer

2+5i

Answer

5-2i

Question 8

What complex number is represented by the graph?

Accepted Answer

-3+i

Answer

-3-i

Answer

1+3i

Answer

1-3i

Question 9

i17

Accepted Answer

a.) i

Answer

b.)  -i

Answer

c.)  -1

Answer

d.)  1

Question 10

What is any number that can be written in the form ai, where a is any real number and i is the imaginary unit?

Accepted Answer

Imaginary Numbers

Answer

Complex Numbers

Answer

Irrational Numbers

Answer

Whole Numbers

Question 11

What letter usually represent imaginary number?

Accepted Answer

i

Answer

a

Answer

j

Answer

x

Question 12

Which of the following numbers is equal to E?

Accepted Answer

-1+2i

Answer

4 + 2i

Answer

3 - 3i

Answer

-1-i

Question 13

i66

Accepted Answer

-1

Answer

1

Answer

i

Answer

-i

Question 14

How do you graph 3-2i on the complex plane?

Accepted Answer

right 3, down 2

Answer

up 3, left 2

Answer

right 3, up 2

Answer

right 3, left 2

Question 15

In the complex number plane, the horizontal axis represents ------------- number?

Accepted Answer

real

Answer

imaginary

Answer

unit

Answer

complex

Question 16

The number 7 is the ---------- part of the complex number 5 + 7i?

Accepted Answer

imaginary

Answer

real

Answer

complex

Answer

unit

Question 17

Question 17.

Accepted Answer

10i

Answer

10

Answer

-10

Answer

-10i

Question 18

Simplify.

Accepted Answer

5i

Answer

-5i

Answer

5

Answer

-5

Question 19

Simplify

3i - (4 + 7i)

Accepted Answer

-4 - 4i

Answer

-4 + 10i

Answer

21 - 12i

Answer

4 - 10i

Question 20

What is the conjugate of -1 + 2i?

Accepted Answer

-1 - 2i

Answer

1 + 2i

Answer

1 - 2i

Answer

-1 + 2i

Representing Complex Numbers

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