AnswersCA-Common Core Algebra II A-CRUnit Test

Complex Numbers Answers

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1
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If , what is the value of i 3?

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A
–1
B
i
C
1
D
–i
2
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What is the sum of and ?

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A
4 StartRoot 2 EndRoot
Option A
B
4 StartRoot 2 EndRoot i
Option B
C
5 StartRoot 2 EndRoot
Option C
D
5 StartRoot 2 EndRoot i
Option D
3

Which complex number has an absolute value of 5?

A
–3 + 4i
B
2 + 3i
C
7 – 2i
D
9 + 4i
4

Which expression is equivalent to ?

Question illustration
A
Negative 4 StartRoot 5 EndRoot
Option A
B
Negative 4 StartRoot 5 EndRoot i
Option B
C
4 StartRoot 5 EndRoot i
Option C
D
4 StartRoot 5 EndRoot
Option D
5

Which expression is equivalent to i 233?

A
1
B
–1
C
i
D
–i
6

Which complex number is represented by the point graphed on the complex plane below?

Question illustration
A
–4 + 3i
B
3 + 4i
C
3 – 4i
D
4 + 3i
7

What is the distance from the origin to point A graphed on the complex plane below?

Question illustration
A
StartRoot 5 EndRoot
Option A
B
StartRoot 13 EndRoot
Option B
C
9
D
13
8

What is the square root of -1?

A
–i
B
i
C
–1
D
1
9

In which quadrant is the number –14 – 5i located on the complex plane?

A
I
B
II
C
III
D
IV
10

Which of the following is equivalent to ?

Question illustration
A
5i
B
18 – 5i
C
18 + 5i
D
23

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