The Complex Number System

What is the definition of an imaginary number?

• x

• -1

• √-1

• origin

Classify the following:
√-9

• real

• imaginary

• rational

• whole

What is the name of this Complex number?

• Imaginary Number

• Non-real Number

• Impossible Number

• Indeterminate Number

Simplify √-23

• -√23

• 23i

• 23

• i√23

Lisa wants to buy two new dresses from the mall. If one dress costs (59 - 6i) and the other costs (34 + 17i), how much money will she need to bring to the mall?

• 82 dollars

• 93 + 11i dollars

• 93 - 23i dollars

• 25 - 23i dollars

i⁷⁹

• i

• 1

• -1

• -i

What does i² =  ?

• 1

• -1

• √-1

• √1

Simplify:
(3 + 2i) + (4i + 6)

• 9 + 6i

• 7i + 8

• 9 + 6i²

• 9 - 6i