WorksheetsIMAGINARY NUMBERS
Total questions: 15
Worksheet time: 30mins
Name
Class
Date
1.
Simplify √-4
a)
2i
b)
-2i
c)
2
d)
4i
2.
Simplify √-23
a)
-√23
b)
23i
c)
23
d)
i√23
3.
Simplify -√-48
a)
4i√3
b)
-4i√3
c)
i√48
d)
-48i
4.
Simplify √-81
a)
-√81
b)
-9i
c)
9i
d)
81i
5.
Simplify √-45
a)
3i√5
b)
-3i√5
c)
-i√45
d)
45i
6.
Simplify √-1
a)
1
b)
-i
c)
-1
d)
i
7.
Simplify √-25
a)
i√25
b)
5i
c)
-5i
d)
25i
8.
Simplify 2√-32
a)
2i√32
b)
4i√2
c)
8i√2
d)
-16i√2
9.
(2i)(3i)
a)
5i
b)
-5
c)
6i2
d)
-6
10.
i7
a)
i
b)
-i
c)
1
d)
-1
11.
Calculate:
i + 6i
i + 6i
a)
6i2
b)
7i
c)
5i
d)
7i2
12.
What does i2 = ?
a)
1
b)
-1
c)
√-1
d)
√1
13.
i13
a)
-1
b)
1
c)
i
d)
-i
14.
Simplify:
(-3i)(4i)(-5i)
(-3i)(4i)(-5i)
a)
-60i
b)
60
c)
-60
d)
60i
15.
(-3i)(i)(5i)
a)
15i
b)
-15i
c)
-15i3
d)
15i3
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