1111

What is i?

• 1

• -1

• √-1

• √1

√-36

• 6
• -6
• -6i
• 6i

• 10
• -10
• 10i
• -10i

What letter usually represent imaginary number?

• a
• i
• j
• x

What does i² = ?

• -1
• √-1
• 1
• -√1

What does i² = ?

• -1
• √-1
• 1
• -√1

Simplify.

• 
• 
• 
• 

• 5i
• -5i
• 5+i
• -5