WorksheetsComplex Numbers
Total questions: 20
Worksheet time: 20mins
Name
Class
Date
1.
Add. (3 + 2i) + (4-5i)
a)
7 - 3i
b)
7 + 7i
c)
1 - 3i
d)
1 - 7i
2.
Add. (-7 + 9i) + (2 - 10i)
a)
-5 + i
b)
-9 + i
c)
-5 - i
d)
9 - i
3.
Subtract. (4 - 7i) - (-3 + 6i)
a)
7 - 13i
b)
7 - i
c)
1 - 13i
d)
1 - i
4.
i15=
a)
-1
b)
i
c)
1
d)
-i
5.
i79
a)
i
b)
1
c)
-1
d)
-i
6.
If z=√2+√2 i then arg(z2)=
a)
0o
b)
60o
c)
90o
d)
Not Possible
7.
Lisa wants to buy two new dresses from the mall. If one dress costs (59 - 6i) and the other costs (34 + 17i), how much money will she need to bring to the mall?
a)
82 dollars
b)
93 + 11i dollars
c)
93 - 23i dollars
d)
25 - 23i dollars
8.
3+√-4
a)
1
b)
3-2i
c)
5
d)
3+2i
9.
(7 + 3i) − (1−8i)
a)
6 + 11i
b)
6 - 5i
c)
6+11i2
d)
-5
10.
Use the Discriminant to determine the type of solutions: -3x^2+7x-1=0
a)
real
b)
2 real
c)
2 imaginary
d)
3 real
11.
a)
A
b)
B
c)
C
d)
D
12.
a)
A
b)
B
c)
C
d)
D
13.
a)
A
b)
B
c)
C
d)
D
14.
a)
A
b)
B
c)
C
d)
D
15.
a)
A
b)
B
c)
C
d)
D
e)
E
16.
a)
A
b)
B
c)
C
d)
D
e)
E
17.
a)
A
b)
B
c)
C
d)
D
e)
E
18.
a)
A
b)
B
c)
C
d)
D
e)
E
19.
a)
A
b)
B
c)
C
d)
D
e)
E
20.
a)
A
b)
B
c)
C
d)
D
e)
E
100 %
