Unit 4 Quiz Corretion

Add: (21 + 6i) + (−5 + 11i)

• 16 + 17i

• 16 − 5i

• 26 + 27i

• 27 + 6i

What is the product of (2 - 3i)(6 + 4i)?

• 24

• 10i

• -10i

• 24 - 10i

Multiply. (2 - 4i)(7 + i)

• 18

• 10

• 10 - 26i

• 18 - 26i

What is the product of the complex numbers below? 2i(3 + 2i)

• True

• False

Simplify: i^9.

• -i

• -1

• i

• 1

What is an equivalent form of (3 - 7i)^2?

• 100

• 58

• 58 - 42i

• -40 - 42i

• 10
• -10
• 10i
• -10i

How many solutions are there?  $\sqrt{-5}$  

• No Solutions

• 1 Solution

• 2 Solutions

• Infinite Solutions

What does i² equal?

• -1

• √-1

• 1

• -√1