Answers26MATH_Recovery_Alg1B22Quadratic Functions: Factored Form

Complex Numbers Answers

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1
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What is the square root of -1?

A
–i
B
i
C
–1
D
1
2
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3

What is the sum of and ?

Question illustration
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
4

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5

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
6

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7

Which of the following is an example of a complex number that is not in the set of real numbers?

A
-7
B
2 + StartRoot 3 EndRoot
Option B
C
4 + 9i
D
Pi
Option D
8

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9

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10

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13

If , what is the value of i 3?

Question illustration
A
–1
B
i
C
1
D
–i
17

Which expression is equivalent to i 233?

A
1
B
–1
C
i
D
–i
19

If f(x) = x3 – 2x2, which expression is equivalent to f(i)?

A
–2 + i
B
–2 – i
C
2 + i
D
2 – i
21

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
25

If the complex number x = 3 + bi and |x|2 = 13, which is a possible value of b?

A
2
B
4
C
9
D
10
26

Which complex number has a distance of from the origin on the complex plane?

Question illustration
A
2 + 15i
B
17 + i
C
20 – 3i
D
4 – i
27

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28

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30

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