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Introduction to Complex Numbers

Authored by Barbara White

Mathematics

10th - 12th Grade

CCSS covered

Introduction to Complex Numbers
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20 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Multiply: 
(4 – 3i)(7 + 2i)

A.  22 - 13i
B.  28 - 19i
C.  34 - 13i
D.  -34 - 29i

Tags

CCSS.HSN.CN.A.2

2.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Find the sum.
(5-2i) + (-7+8i)

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

Tags

CCSS.HSN.CN.A.2

3.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

What is i129?

-i
i
1
-1

Tags

CCSS.HSN.CN.A.2

4.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

i7

i
-i
1
-1

Tags

CCSS.HSN.CN.A.2

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Simplify √-45

3i√5
-3i√5
-i√45
45i

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Find the conjugate of:
5 + 7i

5 − 7i
-5 − 7i
-5 + 7i

Tags

CCSS.HSN.CN.A.3

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Find the conjugate of:
-4 − 8i

-4 + 8i
4 − 8i
4 + 8i

Tags

CCSS.HSN.CN.A.3

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