Complex Number Add, Subtract, Multiply, and Divide

(4 - 2i) - (3 + 6i)

• 7 - 4i

• 1 + 4i

• 1 - 8i

• 7 - 8i

• 
• 
• 
• 

Multiply the following

5(6-3i)

Add 3 and 5i

• 8

• 3+5i

• 8i

√-36

• 6

• -6

• -6i

• +6i and -6i

Divide the problem and select to correct answer listed.

• A

• B

• C

• D

• A
• B
• C
• D

• A
• B
• C
• D

When dividing 2 complex numbers you must 
(check all that apply)

• Multiply by the numerator and denominator by the denominator

• Identify the conjugate of the denominator

• Know the conjugate of the numerator

• Remember no answer can be left with  i^2

• Multiply numerator and denominator by the conjugate of the denominator.
  
  

For this problem what would be the number used to multiply the numberator and denominator by?

• -9

• 9

• -9i

• 9i