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WorksheetsComplex Number
Total questions: 15
Worksheet time: 35mins
Name
Class
Date
1.
Where is the Cartesian form for point A ?
a)
2 + i
b)
-3
c)
2i
d)
-1 - i
2.
Where is point B located?
a)
2 + i
b)
-3
c)
-3i
d)
-1 - i
3.
(3 + 2i) + (4 - 5i)
a)
7 + 7i
b)
1 - 3i
c)
1 - 7i
d)
7 - 3i
4.
Choose the correct answer for the operation pictured.
a)
7-13i
b)
7-i
c)
1-13i
d)
1-i
5.
What does i2 equal?
a)
-1
b)
√-1
c)
1
d)
-√1
6.
Simplify
a)
(-10+6i)/17
b)
(1+50i)/61
c)
(-23+36i)/25
d)
(-21+33i)/34
7.
What is the value of the expression below?
(2 + 4i) + i(2 + i)
a)
4 + 5i
b)
2 + 7i
c)
7i
d)
-1 + 6i
8.
What is the imaginary part of 21-14i?
a)
14
b)
21
c)
-21
d)
-14
9.
What is the real part of 13.2i+1?
a)
13.2
b)
-1
c)
1
d)
-13.2
10.
√-36
a)
6
b)
-6
c)
-6i
d)
6i
11.
What is the complex conjugate of 4-3i?
a)
A. 1/(4-3i)
b)
B. 1/(4+3i)
c)
C. -4 + 3i
d)
D. 4 + 3i
12.
(5-2i) + (-7+8i)
a)
-2+6i
b)
12+6i
c)
-35-16i2
d)
-35 -16i
13.
(-7+6i)2
a)
49+36i
b)
85
c)
13-84i
d)
13+84i
14.
Simplify:
(10+ 15i)-(48 - 30i)
(10+ 15i)-(48 - 30i)
a)
58 - 45i
b)
58 - 15i
c)
-38 - 15i
d)
-38 + 45i
15.
Rationalize and Simplify.
a)
b)
c)
d)
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