Complex Numbers Answers
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1
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In which quadrant is the number –14 – 5i located on the complex plane?
A
IB
IIC
IIID
IV2
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Which complex number has a distance of from the origin on the complex plane?
A
2 + 15iB
17 + iC
20 – 3iD
4 – i3
Which expression is equivalent to ?
A
Negative 4 StartRoot 5 EndRoot
B
Negative 4 StartRoot 5 EndRoot i
C
4 StartRoot 5 EndRoot i
D
4 StartRoot 5 EndRoot
4
Which complex number is represented by the point graphed on the complex plane below?
A
–4 + 3iB
3 + 4iC
3 – 4iD
4 + 3i5
Which expression is equivalent to i 233?
A
1B
–1C
iD
–i6
If f(x) = x3 – 2x2, which expression is equivalent to f(i)?
A
–2 + iB
–2 – iC
2 + iD
2 – i7
Which complex number has an absolute value of 5?
A
–3 + 4iB
2 + 3iC
7 – 2iD
9 + 4i8
What is the square root of -1?
A
–iB
iC
–1D
19
What is the sum of and ?
A
4 StartRoot 2 EndRoot
B
4 StartRoot 2 EndRoot i
C
5 StartRoot 2 EndRoot
D
5 StartRoot 2 EndRoot i
10
Which of the following is an example of a complex number that is not in the set of real numbers?
A
-7B
2 + StartRoot 3 EndRoot
C
4 + 9iD
Pi
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