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Worksheetslesson 1&2 first sec
Total questions: 20
Worksheet time: 2hrs 48mins
Name
Class
Date
1.
√-4
a)
-2
b)
-2i
c)
2
d)
2i
2.
(5-2i) + (-7+8i)
a)
-2+6i
b)
12+6i
c)
-35-16i2
d)
-35 -16i
3.
(5-2i) + (-7+8i)
a)
-2+6i
b)
12+6i
c)
-35-16i2
d)
-35 -16i
4.
What does i2 = ?
a)
-1
b)
√-1
c)
1
d)
-√1
5.
(2i)(3i)
a)
5i
b)
-5
c)
6i
d)
-6
6.
a)
A
b)
B
c)
C
d)
D
7.
(-3-i)(6-i)
a)
-21-7i
b)
-19-3i
c)
-15-5i
d)
-17-9i
8.
Simplify:
-3i(4 + 2i)
-3i(4 + 2i)
a)
6 - 12i
b)
6 + 12i
c)
-12i - 6i2
d)
-12i + 6i2
9.
Simplify.
a)
-5i
b)
5
c)
5i
d)
-5
10.
Multiply:
(4 – 3i)(-7 – 2i)
(4 – 3i)(-7 – 2i)
a)
A. -23 + 13i
b)
B. -23 - 29i
c)
C. -34 + 13i
d)
D. -34 - 29i
11.
Find the product
(1+3i)(2-i)
(1+3i)(2-i)
a)
5+5i
b)
5-5i
c)
2-3i
d)
5+7i
12.
Simplify:
(10+ 15i) - (48 - 30i)
(10+ 15i) - (48 - 30i)
a)
58 - 45i
b)
58 - 15i
c)
-38 - 15i
d)
-38 + 45i
13.
(-7+6i)2
a)
49+36i
b)
85
c)
13-84i
d)
13+84i
14.
i79
a)
i
b)
1
c)
-1
d)
-i
15.
i−13
a)
-1
b)
1
c)
i
d)
-i
16.
What is i129?
a)
-i
b)
i
c)
1
d)
-1
17.
a)
i
b)
-i
c)
1
d)
-1
18.
(1−i)10
a)
32i
b)
-32i
c)
i10
d)
-1
19.
a)
√2
b)
i√2
c)
i2√2
d)
-√2
20.
Which quadratic has COMPLEX roots?
a)
b)
c)
d)
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