Name: 
 

Complex Numbers


Multiple Choice
Identify the choice that best completes the statement or answers the question.
 
 
Simplify.
 

 1. 
mc001-1.jpg
a.
mc001-2.jpg
c.
mc001-4.jpg
b.
mc001-3.jpg
d.
mc001-5.jpg
 

 2. 
mc002-1.jpg
a.
mc002-2.jpg
c.
mc002-4.jpg
b.
mc002-3.jpg
d.
mc002-5.jpg
 

 3. 
mc003-1.jpgmc003-2.jpg
a.
mc003-4.jpg
c.
mc003-6.jpg
b.
mc003-5.jpg
d.
mc003-7.jpg
 

 4. 
mc004-1.jpgmc004-2.jpg
a.
mc004-4.jpg
c.
mc004-6.jpg
b.
mc004-5.jpg
d.
mc004-7.jpg
 

 5. 
What is the sum (14 – 5i) + (–8 + 12i)?
a.
22 – 17i
c.
2 – 13i
b.
6 + 7i
d.
6 – 17i
 

 6. 
Which represents the product of –3i and 9 – 5i?
a.
15 – 27i
c.
–15 – 27i
b.
15 + 27i
d.
–15 + 27i
 

 7. 
Which is equivalent to (7 – 6i)(2 + i)?
a.
20 – 5i
c.
8 + 5i
b.
8 – 5i
d.
20 + 5i
 

 8. 
Which product is a real number?
a.
(3 + 4i)2
c.
(3 – 4i)(4 + 3i)
b.
(3 – 4i)2
d.
(3 – 4i)(3 + 4i)
 

 9. 
Which is equal to i7?
a.
1
c.
i
b.
–1
d.
–i
 

 10. 
Which is the reciprocal of i11?
a.
1
c.
i
b.
–1
d.
–i
 

 11. 
Which is equal to (4 – 12i) – (10 – 8i) + (–4 + 7i)?
a.
–2 + 3i
c.
–10 – 13i
b.
–10 + 3i
d.
–8 – 13i
 

 12. 
Which is equal to mc012-1.jpg?
a.
–41i
c.
9
b.
–9i
d.
41
 

 13. 
Which is equivalent to i–30?
a.
1
c.
i
b.
–1
d.
–i
 



 
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