WorksheetsComplex Numbers
Total questions: 15
Worksheet time: 2hrs 44mins
Name
Class
Date
1.
(3 + 2i) + (4 - 5i)
a)
7 + 7i
b)
1 - 3i
c)
1 - 7i
d)
7 - 3i
2.
(4 - 2i) - (3 + 6i)
a)
7 - 4i
b)
1 + 4i
c)
1 - 8i
d)
7 - 8i
3.
What does i2 equal?
a)
-1
b)
√-1
c)
1
d)
-√1
4.
The expression (2 + 3i)2 is equal to
a)
-5
b)
-5 + 12i
c)
13
d)
13 + 12i
5.
(3 + 8i)(-2 - i)
a)
2-19i
b)
23-i
c)
34+5i
d)
23-i
6.
Simplify
a)
(-10+6i)/17
b)
(1+50i)/61
c)
(-23+36i)/25
d)
(-21+33i)/34
7.
√-36
a)
6
b)
-6
c)
-6i
d)
6i
8.
Simplify.
a)
b)
c)
d)
9.
a)
A
b)
B
c)
C
d)
D
10.
(3+8i)(-2-i)
a)
2-19i
b)
23-i
c)
34+5i
d)
23-i
11.
(2i)(3i)
a)
5i
b)
-5
c)
6i
d)
-6
12.
a)
A
b)
B
c)
C
d)
D
13.
Simplify using the imaginary number i
−20
a)
10i
b)
−10i
c)
2i5
d)
−i20
14.
Find the solutions to the equation:
2x2 +23 = 5
a)
x=3i
b)
x=±3i
c)
x=3
d)
x=±3
15.
(3i)(-2+4i)
a)
-6+12i
b)
-12-6i
c)
-2+7i
d)
12+6i
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