Introduction to Imaginary Numbers

Simplify

• 5i

• -5i

• ±5i

• ±

Simplify

• ± 6

• ± 6i

• ± √6i

• ± √6

Simplify

• ± 10i

• ± 10

• ± √10i

• ± √10

• 
• 
• 
• 

• Undefined

• -1

• 1

• -√1

• 10
• -10
• 10i
• -10i

Q1. What is the value of x?

• A) 10

• B) -10

• C) 10i

• D) -10i

What letter usually represent imaginary number?

• a

• i

• j

• x

• e

Answer explanation

• 5i
• -5i
• 5+i
• -5

What is the value of x if x = 10?

• 10

• -10

• 10i

• -10i