Adding, Subtracting, & Multiplying Complex Numbers

Adding, Subtracting, & Multiplying Complex Numbers

12th Grade

10 Qs

quiz-placeholder

Similar activities

Imaginary and Complex Numbers Quiz

Imaginary and Complex Numbers Quiz

10th - 12th Grade

15 Qs

Operations with Complex Numbers

Operations with Complex Numbers

10th - 12th Grade

15 Qs

Complex Number Operations!

Complex Number Operations!

9th - 12th Grade

11 Qs

 Complex Number Operations

Complex Number Operations

9th - 12th Grade

9 Qs

Math 4 ACT 1

Math 4 ACT 1

10th - 12th Grade

15 Qs

Multiply Complex Numbers 1

Multiply Complex Numbers 1

11th - 12th Grade

10 Qs

adding and subtracting Complex numbers

adding and subtracting Complex numbers

12th Grade

10 Qs

Complex Numbers

Complex Numbers

11th - 12th Grade

13 Qs

Adding, Subtracting, & Multiplying Complex Numbers

Adding, Subtracting, & Multiplying Complex Numbers

Assessment

Quiz

Mathematics

12th Grade

Medium

Created by

Dr Frankenstein

Used 30+ times

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Another way to express √-1 is?

1

-1

i

0

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A complex number can be expressed as a + bi. What does a represent?

the real part of the complex number

the imaginary part of the complex number

depends on the sign of the number

the square root of the complex number

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The complex conjugate can be found by...

Changing the sign of both a and b

Changing the sign of a

Changing the sign of b

Switching the a and b values

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The complex conjugate of 4 + 3i is

3 + 4i

3 - 4i

4 - 3i

4 + 3i

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Simplify the expression:
 (1 + 5i) + (1  5i)\left(1\ +\ 5i\right)\ +\ \left(1\ -\ 5i\right)  

 2 + 10i2\ +\ 10i  

 2 + 10i22\ +\ 10i^2  

 22  

 8-8  

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Simplify the expression:
 (5 + 4i)  (1  2i)\left(5\ +\ 4i\right)\ -\ \left(-1\ -\ 2i\right)  

 6 +6i6\ +6i  

 4 + 2i4\ +\ 2i  

 6  6i6\ -\ 6i  

 4  2i4\ -\ 2i  

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Simplify the expression:
 (8 + 9i) + (4  6i)\left(8\ +\ 9i\right)\ +\ \left(4\ -\ 6i\right)  

 17 + 3i17\ +\ 3i  

 12 + 3i212\ +\ 3i^2  

 17 2i17\ -2i  

 12 + 3i12\ +\ 3i  

Create a free account and access millions of resources

Create resources
Host any resource
Get auto-graded reports
or continue with
Microsoft
Apple
Others
By signing up, you agree to our Terms of Service & Privacy Policy
Already have an account?