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Complex Numbers

Authored by Matthew Edwards

Mathematics

10th - 12th Grade

Used 2+ times

Complex Numbers
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13 questions

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1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Media Image

10
-10
10i
-10i

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

5i
-5i
5+i
-5

3.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

What is the complex conjugate of  4-3i?

A.  1/(4-3i)
B. 1/(4+3i)
C.  -4 + 3i
D.  4 + 3i

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Simplify:
√-108

3i√6
3i√20
6i√3
20i√3

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

(5-2i) + (-7+8i)

-2+6i
12+6i
-35-16i2
-35 -16i

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Multiply: 
(4 – 3i)(-7 – 2i)

A.  -23 + 13i
B.  -23 - 29i
C.  -34 + 13i
D.  -34 - 29i

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Simplify
(-6 - 2i)2

32
36-4i
36+24i
32+24i

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