Imaginary Numbers Equations

• 7

• -7

• 7i

• -7i

Simplify √-23

• -√23

• 23i

• 23

• i√23

Simplify √-1

• 1

• -i

• -1

• i

• 5

• -5

• 5i

• -5i

• i

• -1

• 1

• -i

• 10
• -10
• 10i
• -10i

• 5i
• -5i
• 5+i
• -5

What letter usually represent imaginary number?

• a

• i

• j

• x

• e

Answer explanation

• 10
• -10
• 10i
• -10i

i¹⁹ =?

• +i

• -1

• +1

• -i

Answer explanation