Multiplying and Dividing Test

Unit Test #36

Select your answers to the following 5 questions from the pop-up menus in the right hand column. Clicking the "Begin Test Again" button will clear all the answers.

 

 

Q1:

 

 What is the conjugate of the complex number (4 + 5i)?

A. 4 + 5i

B. 16 + 25i

C. 4 - 5i

D. -4 + 5i
Answer 1:

 

Q2:

 

 What is the imaginary part of the complex number (3 - i)?

A. 3

B. i

C. -1

D. -i
Answer 2:

 

Q3:

 

 Calculate (3 + 4i)(4 - 3i)

A. 24 + 7i

B. 7i

C. 24 + 25i

D. 24 - 7i

 
Answer 3:

 

Q4:

 

 Calculate 

A. 1 + 2i

B. 5 + 10i

C. 1 - 2i

D. -1 + 2i
Answer 4:

 

Q5:

 

If z = 2 - 3i what is z2?

A. -5 + 12i

B. -5 - 12i

C. 5 - 12i

D. 5 + 12i
Answer 5: